The Collaborative International Dictionary of English v.0.48:

Wang \Wang\, n. [OE. wange, AS. wange, wonge, cheek, jaw; akin
   to D. wang, OS. & OHG. wanga, G. wange.]
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   1. The jaw, jawbone, or cheek bone. [Obs. or Prov. Eng.]
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            So work aye the wangs in his head.    --Chaucer.
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   2. A slap; a blow. [Prov. Eng.] --Halliwell.
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   Wang tooth, a cheek tooth; a molar. [Obs.] --Chaucer.
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