Definition of: lavatory

(lav′ə·tôr′ē, -tō′rē) noun plural ·ries
1. An apartment for washing; a place where anything is washed; specifically, a room in a public or semipublic place, as in a school or hotel, provided with appliances for washing and usually with urinals and toilets.
2. Med. A wash for a diseased part; lotion.
3. Eccl. A piscina; also, a water drain in a sacristy where the priest washes his hands before vesting.
—adjective Washing. [<LL lavatorium a place for washing <lavare wash]