Main Entry: lav·a·to·ry

Pronunciation: \ˈla-və-ˌtȯr-ē, British -və-t(ə-)rē\

Function: noun

Inflected Form(s): plural lav·a·to·ries

Etymology: Middle English lavatorie, from Medieval Latin lavatorium, from Latin lavare to wash — more at lye

Date: 14th century

1 : a vessel (as a basin) for washing; especially : a fixed bowl or basin with running water and drainpipe for washing
2 : a room with conveniences for washing and usually with one or more toilets
3 : toilet 3b

— lavatory adjective