The Collaborative International Dictionary of English v.0.48:

Crane \Crane\ (kr[=a]n), n. [AS. cran; akin to D. & LG. craan,
   G. kranich, krahn (this in sense 2), Gr. ge`ranos, L. grus,
   W. & Armor. garan, OSlav. zerav[i^], Lith. gerve, Icel.
   trani, Sw. trana, Dan. trane. [root]24. Cf. Geranium.]
   1. (Zool.) A wading bird of the genus Grus, and allied
      genera, of various species, having a long, straight bill,
      and long legs and neck.
      [1913 Webster]

   Note: The common European crane is Grus cinerea. The
         sand-hill crane (Grus Mexicana) and the whooping
         crane (Grus Americana) are large American species.
         The Balearic or crowned crane is Balearica pavonina.
         The name is sometimes erroneously applied to the herons
         and cormorants.
         [1913 Webster]

   2. Any arm which swings about a vertical axis at one end,
      used for supporting a suspended weight.
      [Webster 1913 Suppl.]

   3. A machine for raising and lowering heavy weights, and,
      while holding them suspended, transporting them through a
      limited lateral distance. In one form it consists of a
      projecting arm or jib of timber or iron, a rotating post
      or base, and the necessary tackle, windlass, etc.; -- so
      called from a fancied similarity between its arm and the
      neck of a crane See Illust. of Derrick.
      [1913 Webster]

   4. An iron arm with horizontal motion, attached to the side
      or back of a fireplace, for supporting kettles, etc., over
      a fire.
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   5. A siphon, or bent pipe, for drawing liquors out of a cask.
      [1913 Webster]

   6. (Naut.) A forked post or projecting bracket to support
      spars, etc., -- generally used in pairs. See Crotch, 2.
      [1913 Webster]

   7. (Zool.) The American blue heron (Ardea herodias).
      [Local, U. S.]
      [Webster 1913 Suppl.]

   Crane fly (Zool.), a dipterous insect with long legs, of
      the genus Tipula.

   Derrick crane. See Derrick.

   Gigantic crane. (Zool.) See Adjutant, n., 3.

   Traveling crane, Traveler crane, Traversing crane
      (Mach.), a crane mounted on wheels; esp., an overhead
      crane consisting of a crab or other hoisting apparatus
      traveling on rails or beams fixed overhead, as in a
      machine shop or foundry.

   Water crane, a kind of hydrant with a long swinging spout,
      for filling locomotive tenders, water carts, etc., with
      water.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Heron \Her"on\, n. [OE. heiroun, heroun, heron, hern, OF.
   hairon, F. h['e]ron, OHG. heigir; cf. Icel. hegri, Dan.
   heire, Sw. h[aum]ger, and also G. h[aum]her jay, jackdaw,
   OHG. hehara, higere, woodpecker, magpie, D. reiger heron, G.
   reiher, AS. hr[=a]gra. Cf. Aigret, Egret.] (Zool.)
   Any wading bird of the genus Ardea and allied genera, of
   the family Ardeid[ae]. The herons have a long, sharp bill,
   and long legs and toes, with the claw of the middle toe
   toothed. The common European heron (Ardea cinerea) is
   remarkable for its directly ascending flight, and was
   formerly hunted with the larger falcons.
   [1913 Webster]

   Note: There are several common American species; as, the
         great blue heron (Ardea herodias); the little blue
         (Ardea c[oe]rulea); the green (Ardea virescens);
         the snowy (Ardea candidissima); the night heron or
         qua-bird (Nycticorax nycticorax). The plumed herons
         are called egrets.
         [1913 Webster]

   Heron's bill (Bot.), a plant of the genus Erodium; -- so
      called from the fancied resemblance of the fruit to the
      head and beak of the heron.
      [1913 Webster]