[1] : The Collaborative International Dictionary of English v.0.48

paperknife \pa"perknife`\ p=a"p~ernimacf`, n.
   a dull knife used to cut open the envelopes in which letters
   are mailed or to slit uncut pages of books.

   syn: letter opener.
        wordnet 1.5

[2] : WordNet (r) 2.0

paperknife
     n : dull knife used to cut open the envelopes in which letters
         are mailed or to slit uncut pages of books syn: letter
         opener, paper knife
     also: paperknives pl
see also:
letter opener paper knife paperknives 

Paperknife >> P Words
Paperknife, definition of term: Paperknife
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