The Collaborative International Dictionary of English v.0.48:

Snick \Snick\, n. [Prov. E. snick a notch; cf. Icel. snikka
   nick, cut.]
   1. A small cut or mark.
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   2. (Cricket) A slight hit or tip of the ball, often
      unintentional.
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   3. (Fiber) A knot or irregularity in yarn. --Knight.
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   4. (Furriery) A snip or cut, as in the hair of a beast.
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   Snick and snee [cf. D. snee, snede, a cut], a combat with
      knives. [Obs.] --Wiseman.
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The Collaborative International Dictionary of English v.0.48:

Snick \Snick\, v. t. [imp. & p. p. Snicked; p. pr. & vb. n.
   Snicking.]
   1. To cut slightly; to strike, or strike off, as by cutting.
      --H. Kingsley.
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   2. (Cricket) To hit (a ball) lightly. --R. A. Proctor.
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The Collaborative International Dictionary of English v.0.48:

Snick \Snick\, n. & v. t.
   See Sneck. [Prov. Eng. & Scot.]
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   Snick up, shut up; silenced. See Sneck up, under Sneck.
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            Give him money, George, and let him go snick up.
                                                  --Beau. & Fl.
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WordNet (r) 3.0 (2006):

snick
    n 1: a small cut [syn: notch, nick, snick]
    2: a glancing contact with the ball off the edge of the cricket
       bat
    v 1: hit a glancing blow with the edge of the bat
    2: cut slightly, with a razor; "The barber's knife nicked his
       cheek" [syn: nick, snick]