The Collaborative International Dictionary of English v.0.48:

Deckle edge \Dec"kle edge`\
   The rough, untrimmed edge of paper left by the deckle; also,
   a rough edge in imitation of this.
   [Webster 1913 Suppl.] deckle-edged

WordNet (r) 3.0 (2006):

deckle edge
    n 1: rough edge left by a deckle on handmade paper or produced
         artificially on machine-made paper [syn: deckle edge,
         deckle]