- a room in a public building having lavatories, washing facilities, and sometimes couches
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restroom /ˈrɛstˌruːm; -ˌrʊm/ n
ˈrest ˌroom, n. [countable]
WordReference Random House Unabridged Dictionary of American English © 2026- a public lavatory, esp. in a public building, having washbasins, toilets, etc.
rest′ room′,
- rooms or a room having a washbowl, toilet, and other facilities for use by employees, visitors, etc., as in a store, theater, or office.
- 1895–1900, American.
'restroom' also found in these entries (note: many are not synonyms or translations):