The Collaborative International Dictionary of English v.0.48:

Pash \Pash\, v. t. [Prob. of imitative origin, or possibly akin
   to box to fight with the fists.]
   To strike; to crush; to smash; to dash in pieces. [Obs.] --P.
   Plowman. "I'll pash him o'er the face." --Shak.
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The Collaborative International Dictionary of English v.0.48:

Pash \Pash\, n. [Scot., the pate. Cf. Pash, v. t.]
   1. The head; the poll. [R.] "A rough pash." --Shak.
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   2. A crushing blow. [Obs.]
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   3. A heavy fall of rain or snow. [Prov. Eng.]
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