wc

Etymology
From, an initialism for.

Noun

 * 1) toilet (bathroom with toilet)
 * 2) water closet

Etymology
From, an initialism for.

Noun

 * 1)  (bathroom with toilet)

Noun

 * 1) a bathroom (with a toilet)
 * 1) a bathroom (with a toilet)
 * 1) a bathroom (with a toilet)

Usage notes
Only neuter gender appears in sources, but common gender seems to be more common in practice on Google.