The Collaborative International Dictionary of English v.0.48:

Colt \Colt\ (k[=o]lt; 110), n. [OE. colt a young horse, ass, or
   camel, AS. colt; cf. dial. Sw. kullt a boy, lad.]
   1. The young of the equine genus or horse kind of animals; --
      sometimes distinctively applied to the male, filly being
      the female. Cf. Foal.
      [1913 Webster]

   Note: In sporting circles it is usual to reckon the age of
         colts from some arbitrary date, as from January 1, or
         May 1, next preceding the birth of the animal.
         [1913 Webster]

   2. A young, foolish fellow. --Shak.
      [1913 Webster]

   3. A short knotted rope formerly used as an instrument of
      punishment in the navy. --Ham. Nav. Encyc.
      [1913 Webster]

   Colt's tooth, an imperfect or superfluous tooth in young
      horses.

   To cast one's colt's tooth, to cease from youthful
      wantonness. "Your colt's tooth is not cast yet." --Shak.

   To have a colt's tooth, to be wanton. --Chaucer.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Colt \Colt\ (k[=o]lt; 110), v. i.
   To frisk or frolic like a colt; to act licentiously or
   wantonly. [Obs.]
   [1913 Webster]

         They shook off their bridles and began to colt.
                                                  --Spenser.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Colt \Colt\, v. t.
   1. To horse; to get with young. --Shak.
      [1913 Webster]

   2. To befool. [Obs.] --Shak.
      [1913 Webster]

WordNet (r) 3.0 (2006):

colt
    n 1: a young male horse under the age of four
    2: a kind of revolver

Moby Thesaurus II by Grady Ward, 1.0:

83 Moby Thesaurus words for "colt":
   Houyhnhnm, beginner, birdling, boot, boy, brood mare, bub, bubba,
   buck, bud, buddy, calf, catling, charger, chick, chickling, chicky,
   courser, critter, cub, dobbin, dogie, duckling, entire,
   entire horse, equine, fawn, fellow, filly, fledgling, foal,
   freshman, fryer, gelding, gosling, hobbledehoy, horse, kid, kit,
   kitten, lad, laddie, lamb, lambkin, litter, manchild, mare, master,
   mount, muchacho, nag, neophyte, nest, nestling, newcomer,
   novitiate, piglet, pigling, polliwog, prancer, pullet, pup, puppy,
   rookie, schoolboy, shoat, sonny, sonny boy, stallion, steed, stud,
   studhorse, tadpole, tarpan, top horse, tyro, war-horse, weaner,
   whelp, wild horse, yeanling, young man, youth



Bouvier's Law Dictionary, Revised 6th Ed (1856):

COLT. An animal of the horse species, whether male or female, not more than
four years old. Russ. & Ry. 416.



U.S. Gazetteer Places (2000):

Colt, AR -- U.S. city in Arkansas
   Population (2000):    368
   Housing Units (2000): 188
   Land area (2000):     1.246548 sq. miles (3.228544 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    1.246548 sq. miles (3.228544 sq. km)
   FIPS code:            14950
   Located within:       Arkansas (AR), FIPS 05
   Location:             35.130750 N, 90.811261 W
   ZIP Codes (1990):     72326
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Colt, AR
    Colt