The Collaborative International Dictionary of English v.0.48:

Squat \Squat\, v. t.
   To bruise or make flat by a fall. [Obs.]
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The Collaborative International Dictionary of English v.0.48:

Squat \Squat\, a.
   1. Sitting on the hams or heels; sitting close to the ground;
      cowering; crouching.
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            Him there they found,
            Squat like a toad, close at the ear of Eve.
                                                  --Milton.
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   2. Short and thick, like the figure of an animal squatting.
      "The round, squat turret." --R. Browning.
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            The head [of the squill insect] is broad and squat.
                                                  --Grew.
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The Collaborative International Dictionary of English v.0.48:

Squat \Squat\ (skw[o^]t), n. (Zool.)
   The angel fish (Squatina angelus).
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The Collaborative International Dictionary of English v.0.48:

Squat \Squat\, v. i. [imp. & p. p. Squatted; p. pr. & vb. n.
   Squatting.] [OE. squatten to crush, OF. esquater, esquatir
   (cf. It. quatto squat, cowering), perhaps fr. L. ex +
   coactus, p. p. of cogere to drive or urge together. See
   Cogent, Squash, v. t.]
   1. To sit down upon the hams or heels; as, the savages
      squatted near the fire.
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   2. To sit close to the ground; to cower; to stoop, or lie
      close, to escape observation, as a partridge or rabbit.
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   3. To settle on another's land without title; also, to settle
      on common or public lands.
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The Collaborative International Dictionary of English v.0.48:

Squat \Squat\, n.
   1. The posture of one that sits on his heels or hams, or
      close to the ground.
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   2. A sudden or crushing fall. [Obs.] --Herbert.
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   3. (Mining)
      (a) A small vein of ore.
      (b) A mineral consisting of tin ore and spar. --Halliwell.
          --Woodward.
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   Squat snipe (Zool.), the jacksnipe; -- called also
      squatter. [Local, U.S.]
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WordNet (r) 3.0 (2006):

squat
    adj 1: short and thick; as e.g. having short legs and heavy
           musculature; "some people seem born to be square and
           chunky"; "a dumpy little dumpling of a woman";
           "dachshunds are long lowset dogs with drooping ears"; "a
           little church with a squat tower"; "a squatty red
           smokestack"; "a stumpy ungainly figure" [syn: chunky,
           dumpy, low-set, squat, squatty, stumpy]
    2: having a low center of gravity; built low to the ground [syn:
       squat, underslung]
    n 1: exercising by repeatedly assuming a crouching position with
         the knees bent; strengthens the leg muscles [syn: knee
         bend, squat, squatting]
    2: a small worthless amount; "you don't know jack" [syn: jack,
       doodly-squat, diddly-squat, diddlysquat, diddly-shit,
       diddlyshit, diddly, diddley, squat, shit]
    3: the act of assuming or maintaining a crouching position with
       the knees bent and the buttocks near the heels [syn: squat,
       squatting]
    v 1: sit on one's heels; "In some cultures, the women give birth
         while squatting"; "The children hunkered down to protect
         themselves from the sandstorm" [syn: squat, crouch,
         scrunch, scrunch up, hunker, hunker down]
    2: be close to the earth, or be disproportionately wide; "The
       building squatted low"
    3: occupy (a dwelling) illegally