ˈlævəˌtori 
British ˈlævətri
plural lavatories
1
formal
: a room with a toilet and sink
Note: In U.S. English, lavatory is most often used for a room in an airplane. It may also be used for a room in other kinds of public places. In British English, lavatory is most often used for a room in a public place but may also be used for a room in a home.
2
British
: toilet sense 1
3
US, technical
: a bathroom sink
a wide choice of lavatories on sale at plumbing supply stores
Cite this Entry
“Lavatory.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/lavatory. Accessed 18 Jun. 2026.
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