The Collaborative International Dictionary of English v.0.48:

Foxtail \Fox"tail`\, n.
   1. The tail or brush of a fox.
      [1913 Webster]

   2. (Bot.) The name of several kinds of grass having a soft
      dense head of flowers, mostly the species of Alopecurus
      and Setaria.
      [1913 Webster]

   3. (Metal.) The last cinders obtained in the fining process.
      --Raymond.
      [1913 Webster]

   Foxtail saw, a dovetail saw.

   Foxtail wedging. See Fox wedge, under Fox.
      [1913 Webster] fox trot

The Collaborative International Dictionary of English v.0.48:

Bottle \Bot"tle\, n. [OE. bote, botelle, OF. botel, bouteille,
   F. bouteille, fr. LL. buticula, dim. of butis, buttis, butta,
   flask. Cf. Butt a cask.]
   1. A hollow vessel, usually of glass or earthenware (but
      formerly of leather), with a narrow neck or mouth, for
      holding liquids.
      [1913 Webster]

   2. The contents of a bottle; as much as a bottle contains;
      as, to drink a bottle of wine.
      [1913 Webster]

   3. Fig.: Intoxicating liquor; as, to drown one's reason in
      the bottle.
      [1913 Webster]

   Note: Bottle is much used adjectively, or as the first part
         of a compound.
         [1913 Webster]

   Bottle ale, bottled ale. [Obs.] --Shak.

   Bottle brush, a cylindrical brush for cleansing the
      interior of bottles.

   Bottle fish (Zool.), a kind of deep-sea eel (Saccopharynx
      ampullaceus), remarkable for its baglike gullet, which
      enables it to swallow fishes two or three times its won
      size.

   Bottle flower. (Bot.) Same as Bluebottle.

   Bottle glass, a coarse, green glass, used in the
      manufacture of bottles. --Ure.

   Bottle gourd (Bot.), the common gourd or calabash
      (Lagenaria Vulgaris), whose shell is used for bottles,
      dippers, etc.

   Bottle grass (Bot.), a nutritious fodder grass (Setaria
      glauca and Setaria viridis); -- called also foxtail,
      and green foxtail.

   Bottle tit (Zool.), the European long-tailed titmouse; --
      so called from the shape of its nest.

   Bottle tree (Bot.), an Australian tree (Sterculia
      rupestris), with a bottle-shaped, or greatly swollen,
      trunk.

   Feeding bottle, Nursing bottle, a bottle with a rubber
      nipple (generally with an intervening tube), used in
      feeding infants.
      [1913 Webster]

WordNet (r) 3.0 (2006):

foxtail
    n 1: grasses of the genera Alopecurus and Setaria having dense
         silky or bristly brushlike flowering spikes [syn:
         foxtail, foxtail grass]