The Collaborative International Dictionary of English v.0.48:

Chit \Chit\ (ch[i^]t), n. [Cf. AS. c[imac][eth] shoot, sprig,
   from the same root as c[imac]nan to yawn. See Chink a
   cleft.]
   1. The embryo or the growing bud of a plant; a shoot; a
      sprout; as, the chits of Indian corn or of potatoes.
      [1913 Webster]

   2. A child or babe; as, a forward chit; also, a young, small,
      or insignificant person or animal.
      [1913 Webster]

            A little chit of a woman.             --Thackeray.
      [1913 Webster]

   3. An excrescence on the body, as a wart. [Obs.]
      [1913 Webster]

   4. A small tool used in cleaving laths. --Knight.
      [1913 Webster] Chit

The Collaborative International Dictionary of English v.0.48:

Chit \Chit\, Chitty \Chit"ty\, n. [Hind. chi[.t][.t][imac].]
   1. A short letter or note; a written message or memorandum; a
      certificate given to a servant; a pass, or the like.
      [Webster 1913 Suppl.]

   2. A signed voucher or memorandum of a small debt, as for
      food and drinks at a club. [India, China, etc.]
      [Webster 1913 Suppl.]

The Collaborative International Dictionary of English v.0.48:

Chit \Chit\, v. i.
   To shoot out; to sprout.
   [1913 Webster]

         I have known barley chit in seven hours after it had
         been thrown forth.                       --Mortimer.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Chit \Chit\, 3d pers. sing. of Chide.
   Chideth. [Obs.] --Chaucer.
   [1913 Webster]

WordNet (r) 3.0 (2006):

chit
    n 1: a dismissive term for a girl who is immature or who lacks
         respect; "she was incensed that this chit of a girl should
         dare to make a fool of her in front of the class"; "she's a
         saucy chit"
    2: the bill in a restaurant; "he asked the waiter for the check"
       [syn: check, chit, tab]

Moby Thesaurus II by Grady Ward, 1.0:

99 Moby Thesaurus words for "chit":
   accounts payable, accounts receivable, acknowledgment, amount due,
   answer, bad debts, bairn, bantam, banty, bill, billet, bills,
   borrowing, bud, business letter, button, charges, cherub, chick,
   chickabiddy, child, chits, communication, darling, debt,
   diminutive, dispatch, due, dues, epistle, favor, featherweight,
   financial commitment, fingerling, floating debt, funded debt,
   indebtedness, indebtment, innocent, juvenile, kid, kitten, lamb,
   lambkin, letter, liability, lightweight, line, little bugger,
   little fellow, little guy, little innocent, little one, little tad,
   little tot, maturity, memo, memorandum, message, mini, minikin,
   minnow, minny, missive, mite, moppet, mouse, national debt, nipper,
   notation, note, nubbin, obligation, offspring, outstanding debt,
   peewee, pledge, pony, public debt, puss, reply, rescript, runt,
   score, shaver, shrimp, slip, small fry, snip, snippet, tad, tit,
   tot, uncollectibles, unfulfilled pledge, wart, wee tot, wisp,
   youngster