WordNet (r) 3.0 (2006):

W.C.
    n 1: a toilet in Britain [syn: water closet, closet, W.C.,
         loo]

Moby Thesaurus II by Grady Ward, 1.0:

25 Moby Thesaurus words for "WC":
   backhouse, basement, bathroom, can, closet, comfort station,
   convenience, crapper, earth closet, head, john, johnny,
   johnny house, latrine, lavatory, necessary, outhouse, powder room,
   privy, rest room, toilet, toilet room, urinal, washroom,
   water closet



V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

WC
       WildCard multicast route entry (PIM, Multicast)


V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

WC
       Word Count (Unix)


V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

WC
       Write Cache (SCSI, HDD)