The Collaborative International Dictionary of English v.0.48:

Hunch \Hunch\, v. t. [imp. & p. p. Hunched; p. pr. & vb. n.
   Hunching.]
   1. To push or jostle with the elbow; to push or thrust
      suddenly.
      [1913 Webster]

   2. To thrust out a hump or protuberance; to crook, as the
      back. --Dryden.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

hunched \hunched\ adj.
   having the back and shoulders rounded; not erect; -- of
   people.

   Syn: round-backed, round-shouldered, stooped, stooping,
        crooked.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

hunched
    adj 1: having the back and shoulders rounded; not erect; "a
           little oldish misshapen stooping woman" [syn: hunched,
           round-backed, round-shouldered, stooped,
           stooping, crooked]

Moby Thesaurus II by Grady Ward, 1.0:

18 Moby Thesaurus words for "hunched":
   arched, arciform, arclike, arcual, bandy, bowed, bowlike, concave,
   convex, embowed, gibbose, gibbous, humpbacked, humped, humpy,
   hunchy, oxbow, vaulted