noun
lavatory
LAV-uh-tree
noun
1
A room containing a toilet, or the toilet itself.
"The plane's lavatory was occupied, so she waited by the galley."
2
A basin or sink used for washing.
"The old lavatory in the hallway still has its original brass taps."
How to Use Lavatory
Learner’s notesIn plain EnglishA formal or old-fashioned word for a toilet or washroom.
When to use it
Fairly formal or old-fashioned; "bathroom," "toilet," or "restroom" are far more common in everyday speech.
Word Forms
lavatories plural
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The plane's _____ was occupied, so she waited by the galley.
Etymology
From Late Latin lavatorium, "place for washing," from Latin lavare, "to wash."