What does lavatory mean?
Lavatory is a formal word for a room or building containing toilets, particularly in British English and in institutional or travel settings. It can also denote a toilet fixture, especially aboard an aircraft or ship, although this use is less common in general conversation. The word has an unusually dignified, euphemistic tone: a sign marked “Lavatory” is less blunt than one marked “Toilet,” but it is also less conversational than “restroom” or “washroom.” Historically, lavatory referred to a washbasin or a place for washing, and its principal sense gradually shifted toward the room where people use a toilet. Its Latin ancestry is transparent: lavatory comes through Latin lavatorium from lavare, “to wash.” Today it remains a useful formal alternative in public facilities, transportation, and descriptive writing, although most speakers casually use other terms.
nounA room or building containing one or more toilets. By extension, it can mean a toilet fixture, especially aboard an aircraft or ship.
- A room or building containing one or more toilets.
- A toilet or toilet fixture, especially aboard an aircraft or ship.
- Formerly, a washbasin or place used for washing.
"The museum has a public lavatory on the ground floor."
"Passengers were asked to return to their seats before the lavatory was serviced."
"The old lavatory was installed aboard the ship before modern bathroom facilities became common."
The standard plural is lavatories, typically referring to multiple rooms, buildings, or toilet fixtures of this kind.
"The station has several lavatories on each platform."
Lavatory literally grew from the Latin for “to wash”; it began as a washbasin and became one of English’s most formal ways to name a toilet.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does lavatory come from?
Lavatory entered English in the late Middle English period from Latin lavatorium, originally meaning a washbasin or place for washing. The Latin word was formed from lavare, “to wash,” and the English word later developed its principal sense of a room containing a toilet. English words such as lave, lavage, and lavender also trace to this Latin root of washing.
How lavatory is actually used
Lavatory is formal and often mildly euphemistic. It is especially common in British English and in institutional, travel, and nautical contexts, while it is less usual in everyday American speech.