The Collaborative International Dictionary of English v.0.48:

Lap \Lap\, v. t. [imp. & p. p. Lapped; p. pr. & vb. n.
   Lapping.]
   1. To rest or recline in a lap, or as in a lap.
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            To lap his head on lady's breast.     --Praed.
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   2. To cut or polish with a lap, as glass, gems, cutlery, etc.
      See 1st Lap, 10.
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