WordNet (r) 3.0 (2006):

dry clean
    v 1: clean with chemical agents

Moby Thesaurus II by Grady Ward, 1.0:

29 Moby Thesaurus words for "dry clean":
   bleach, bowdlerize, clean, clean out, clean up, cleanse, clear out,
   delouse, depurate, deterge, dust, dust off, expurgate, freshen,
   lustrate, purge, purify, reform, scavenge, spruce, steam-clean,
   sweep out, sweeten, tidy, whiten, wipe, wipe off, wipe out,
   wipe up