The Collaborative International Dictionary of English v.0.48:

Barnyard grass, for hay. South. Panicum Grus-galli. Bent,
pasture and hay. Agrostis, several species. Bermuda grass,
pasture. South. Cynodon Dactylon. Black bent. Same as Switch
grass (below). Blue bent, hay. North and West. Andropogon
provincialis. Blue grass, pasture. Poa compressa. Blue joint,
hay. Northwest. Aqropyrum glaucum. Buffalo grass, grazing.
Rocky Mts., etc.
      (a) Buchlo["e] dectyloides.
      (b) Same as Grama grass (below). Bunch grass, grazing.
          Far West. Eriocoma, Festuca, Stips, etc. Chess,
          or Cheat, a weed. Bromus secalinus, etc. Couch
          grass. Same as Quick grass (below). Crab grass,
      (a) Hay, in South. A weed, in North. Panicum sanguinale.
      (b) Pasture and hay. South. Eleusine Indica. Darnel
      (a) Bearded, a noxious weed. Lolium temulentum.
      (b) Common. Same as Rye grass (below). Drop seed, fair
          for forage and hay. Muhlenbergia, several species.
          English grass. Same as Redtop (below). Fowl meadow
          grass.
      (a) Pasture and hay. Poa serotina.
      (b) Hay, on moist land. Gryceria nervata. Gama grass,
          cut fodder. South. Tripsacum dactyloides. Grama
          grass, grazing. West and Pacific slope. Bouteloua
          oligostachya, etc. Great bunch grass, pasture and
          hay. Far West. Festuca scabrella. Guinea grass, hay.
          South. Panicum jumentorum. Herd's grass, in New
          England Timothy, in Pennsylvania and South Redtop.
          Indian grass. Same as Wood grass (below). Italian
          rye grass, forage and hay. Lolium Italicum. Johnson
          grass, grazing and hay. South and Southwest. Sorghum
          Halepense. Kentucky blue grass, pasture. Poa
          pratensis. Lyme grass, coarse hay. South. Elymus,
          several species. Manna grass, pasture and hay.
          Glyceria, several species. Meadow fescue, pasture
          and hay. Festuca elatior. Meadow foxtail, pasture,
          hay, lawn. North. Alopecurus pratensis. Meadow
          grass, pasture, hay, lawn. Poa, several species.
          Mesquite grass, or Muskit grass. Same as Grama grass
          (above). Nimble Will, a kind of drop seed.
          Muhlenbergia diffsa. Orchard grass, pasture and hay.
          Dactylis glomerata. Porcupine grass, troublesome to
          sheep. Northwest. Stipa spartea. Quaking grass,
          ornamental. Briza media and maxima. Quitch, or
          Quick, grass, etc., a weed. Agropyrum repens. Ray
          grass. Same as Rye grass (below). Redtop, pasture
          and hay. Agrostis vulgaris. Red-topped buffalo
          grass, forage. Northwest. Poa tenuifolia. Reed
          canary grass, of slight value. Phalaris arundinacea.
          Reed meadow grass, hay. North. Glyceria aquatica.
          Ribbon grass, a striped leaved form of Reed canary
          grass. Rye grass, pasture, hay. Lolium perenne,
          var. Seneca grass, fragrant basket work, etc. North.
          Hierochloa borealis. Sesame grass. Same as Gama
          grass (above). Sheep's fescue, sheep pasture, native
          in Northern Europe and Asia. Festuca ovina. Small
          reed grass, meadow pasture and hay. North. Deyeuxia
          Canadensis. Spear grass, Same as Meadow grass
          (above). Squirrel-tail grass, troublesome to animals.
          Seacoast and Northwest. Hordeum jubatum. Switch
          grass, hay, cut young. Panicum virgatum. Timothy,
          cut young, the best of hay. North. Phleum pratense.
          Velvet grass, hay on poor soil. South. Holcus
          lanatus. Vernal grass, pasture, hay, lawn.
          Anthoxanthum odoratum. Wire grass, valuable in
          pastures. Poa compressa. Wood grass, Indian grass,
          hay. Chrysopogon nutans.
          [1913 Webster]

   Note: Many plants are popularly called grasses which are not
         true grasses botanically considered, such as black
         grass, goose grass, star grass, etc.
         [1913 Webster]

   Black grass, a kind of small rush (Juncus Gerardi),
      growing in salt marshes, used for making salt hay.

   Grass of the Andes, an oat grass, the Arrhenatherum
      avenaceum of Europe.

   Grass of Parnassus, a plant of the genus Parnassia
      growing in wet ground. The European species is Parnassia
      palustris; in the United States there are several
      species.

   Grass bass (Zool.), the calico bass.

   Grass bird, the dunlin.

   Grass cloth, a cloth woven from the tough fibers of the
      grass-cloth plant.

   Grass-cloth plant, a perennial herb of the Nettle family
      (B[oe]hmeria nivea syn. Urtica nivea), which grows in
      Sumatra, China, and Assam, whose inner bark has fine and
      strong fibers suited for textile purposes.

   Grass finch. (Zool.)
      (a) A common American sparrow (Po["o]c[ae]tes
          gramineus); -- called also vesper sparrow and
          bay-winged bunting.
      (b) Any Australian finch, of the genus Po["e]phila, of
          which several species are known.

   Grass lamb, a lamb suckled by a dam running on pasture land
      and giving rich milk.

   Grass land, land kept in grass and not tilled.

   Grass moth (Zool.), one of many small moths of the genus
      Crambus, found in grass.

   Grass oil, a fragrant essential volatile oil, obtained in
      India from grasses of the genus Andropogon, etc.; --
      used in perfumery under the name of citronella, ginger
      grass oil, lemon grass oil, essence of verbena etc.


   Grass owl (Zool.), a South African owl (Strix Capensis).


   Grass parrakeet (Zool.), any of several species of
      Australian parrots, of the genus Euphemia; -- also
      applied to the zebra parrakeet.

   Grass plover (Zool.), the upland or field plover.

   Grass poly (Bot.), a species of willowwort (Lythrum
      Hyssopifolia). --Johnson.

   Crass quit (Zool.), one of several tropical American
      finches of the genus Euetheia. The males have most of
      the head and chest black and often marked with yellow.

   Grass snake. (Zool.)
      (a) The common English, or ringed, snake (Tropidonotus
          natrix).
      (b) The common green snake of the Northern United States.
          See Green snake, under Green.

   Grass snipe (Zool.), the pectoral sandpiper (Tringa
      maculata); -- called also jacksnipe in America.

   Grass spider (Zool.), a common spider (Agelena n[ae]via),
      which spins flat webs on grass, conspicuous when covered
      with dew.

   Grass sponge (Zool.), an inferior kind of commercial sponge
      from Florida and the Bahamas.

   Grass table. (Arch.) See Earth table, under Earth.

   Grass vetch (Bot.), a vetch (Lathyrus Nissolia), with
      narrow grasslike leaves.

   Grass widow. [Cf. Prov. R. an unmarried mother, G.
      strohwittwe a mock widow, Sw. gr[aum]senka a grass widow.]
      (a) An unmarried woman who is a mother. [Obs.]
      (b) A woman separated from her husband by abandonment or
          prolonged absence; a woman living apart from her
          husband. [Slang.]

   Grass wrack (Bot.) eelgrass.

   To bring to grass (Mining.), to raise, as ore, to the
      surface of the ground.

   To put to grass, To put out to grass, to put out to graze
      a season, as cattle.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Squirrel \Squir"rel\ (skw[~e]r"r[e^]l or skw[i^]r"-; 277), n.
   [OE. squirel, OF. esquirel, escurel, F. ['e]cureuil, LL.
   squirelus, squirolus, scuriolus, dim. of L. sciurus, Gr.
   si`oyros; skia` shade + o'yra` tail. Cf. Shine, v. i.]
   1. (Zool.) Any one of numerous species of small rodents
      belonging to the genus Sciurus and several allied genera
      of the family Sciuridae. Squirrels generally have a
      bushy tail, large erect ears, and strong hind legs. They
      are commonly arboreal in their habits, but many species
      live in burrows.
      [1913 Webster]

   Note: Among the common North American squirrels are the gray
         squirrel (Sciurus Carolinensis) and its black
         variety; the fox, or cat, squirrel (Sciurus cinereus,
         or Sciurus niger) which is a large species, and
         variable in color, the southern variety being
         frequently black, while the northern and western
         varieties are usually gray or rusty brown; the red
         squirrel (see Chickaree); the striped, or chipping,
         squirrel (see Chipmunk); and the California gray
         squirrel (Sciurus fossor). Several other species
         inhabit Mexico and Central America. The common European
         species (Sciurus vulgaris) has a long tuft of hair on
         each ear. The so-called Australian squirrels are
         marsupials. See Petaurist, and Phalanger.
         [1913 Webster]

   2. One of the small rollers of a carding machine which work
      with the large cylinder.
      [1913 Webster]

   Barking squirrel (Zool.), the prairie dog.

   Federation squirrel (Zool.), the striped gopher. See
      Gopher, 2.

   Flying squirrel (Zool.). See Flying squirrel, in the
      Vocabulary.

   Java squirrel. (Zool.). See Jelerang.

   Squirrel corn (Bot.), a North American herb (Dicentra
      Canadensis) bearing little yellow tubers.

   Squirrel cup (Bot.), the blossom of the Hepatica triloba,
      a low perennial herb with cup-shaped flowers varying from
      purplish blue to pink or even white. It is one of the
      earliest flowers of spring.

   Squirrel fish. (Zool.)
      (a) A sea bass (Serranus fascicularis) of the Southern
          United States.
      (b) The sailor's choice (Diplodus rhomboides).
      (c) The redmouth, or grunt.
      (d) A market fish of Bermuda (Holocentrum Ascensione).


   Squirrel grass (Bot.), a pestiferous grass (Hordeum
      murinum) related to barley. In California the stiffly
      awned spikelets work into the wool of sheep, and into the
      throat, flesh, and eyes of animals, sometimes even
      producing death.

   Squirrel hake (Zool.), a common American hake (Phycis
      tenuis); -- called also white hake.

   Squirrel hawk (Zool.), any rough-legged hawk; especially,
      the California species Archibuteo ferrugineus.

   Squirrel monkey. (Zool.)
      (a) Any one of several species of small, soft-haired South
          American monkeys of the genus Callithrix. They are
          noted for their graceful form and agility. See
          Teetee.
      (b) A marmoset.

   Squirrel petaurus (Zool.), a flying phalanger of Australia.
      See Phalanger, Petaurist, and Flying phalanger under
      Flying.

   Squirrel shrew (Zool.), any one of several species of East
      Indian and Asiatic insectivores of the genus Tupaia.
      They are allied to the shrews, but have a bushy tail, like
      that of a squirrel.

   Squirrel-tail grass (Bot.), a grass (Hordeum jubatum)
      found in salt marshes and along the Great Lakes, having a
      dense spike beset with long awns.
      [1913 Webster]

WordNet (r) 3.0 (2006):

Hordeum jubatum
    n 1: barley grown for its highly ornamental flower heads with
         delicate long silky awns; North America and northeastern
         Asia [syn: squirreltail barley, foxtail barley,
         squirreltail grass, Hordeum jubatum]