WordNet (r) 3.0 (2006):

while away
    v 1: spend or pass, as with boredom or in a pleasant manner; of
         time [syn: while away, get through]

Moby Thesaurus II by Grady Ward, 1.0:

26 Moby Thesaurus words for "while away":
   bestow, consecrate to, consume, dally away, dedicate to, devote,
   diddle away, dribble away, drivel away, employ, expend, fool away,
   fritter away, give over to, give to, idle away, muddle away, pass,
   piss away, potter away, put in, spend, trifle away, use up, while,
   wile