The Collaborative International Dictionary of English v.0.48:
Chuck \Chuck\ (ch[u^]k), v. i. [imp. & p. p. Chucked; p. pr. &
   vb. n. Chucking.] [Imitative of the sound.]
   1. To make a noise resembling that of a hen when she calls
      her chickens; to cluck.
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   2. To chuckle; to laugh. [R.] --Marston.
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The Collaborative International Dictionary of English v.0.48:
Chuck \Chuck\, v. t. [imp. & p. p. Chucked; p. pr. & vb. n.
   Chucking.] [F. choquer to strike. Cf. Shock, v. t.]
   1. To strike gently; to give a gentle blow to.
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            Chucked the barmaid under the chin.   --W. Irving.
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   2. To toss or throw smartly out of the hand; to pitch.
      [Colloq.] "Mahomet Ali will just be chucked into the
      Nile." --Lord Palmerson.
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   3. (Mech.) To place in a chuck, or hold by means of a chuck,
      as in turning; to bore or turn (a hole) in a revolving
      piece held in a chuck.
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