lavatory

noun

lav·​a·​to·​ry ˈla-və-ˌtȯr-ē 

 British  -və-t(ə-)rē

plural lavatories

1

: a vessel (such as a basin) for washing

especially : a fixed bowl or basin with running water and drainpipe for washing

2

: a room with conveniences for washing and usually with one or more toilets

the airplane's lavatory

3

: toilet sense 1a

lavatory adjective

Synonyms

• bathroom
• restroom
• toilet

Examples of lavatory in a Sentence

a wide choice of lavatories on sale at plumbing supply stores

the school's filthy, broken-down lavatories were a disgrace

Recent Examples on the Web

Thailand flight delayed by threat A bomb threat message on Air India flight AI 379, which was bound for New Delhi from Phuket International Airport in southern Thailand, was found in a lavatory shortly after the plane took off Friday, officials said. —Shonal Ganguly, Los Angeles Times, 13 June 2025

The rest of the red-eye flight continued as usual, until the pilot got up to use the lavatory during the journey. —Katie Nadworny, Travel + Leisure, 9 June 2025

There are six passenger lavatories onboard, plus a rest area and mini-galley for the aircrew. —Marisa Garcia, Forbes.com, 13 May 2025

The scheduled flight went on as usual until the pilot got up to use the lavatory during the duration of the flight. —Rachel Flynn, People.com, 30 May 2025

Word History

Etymology

Middle English lavatorie, from Medieval Latin lavatorium, from Latin lavare to wash — more at lye

First Known Use

14th century, in the meaning defined at sense 1

Phrases Containing lavatory

• lavatory paper

Rhymes for lavatory

• allegory
• amatory
• auditory
• category
• clerestory
• crematory
• desultory
• dilatory
• dormitory
• excretory
• extempore
• feudatory

Kids Definition

lavatory

noun

lav·​a·​to·​ry ˈlav-ə-ˌtōr-ē 

-ˌtȯr-

plural lavatories

1

: a basin for washing

especially : a small sink with running water and drainpipe

2

: a room with lavatories and usually with toilets

3

: toilet sense 2b

Etymology

Middle English lavatorie "basin for washing," from Latin lavatorium (same meaning), derived from earlier lavare "to wash" — related to laundry, lavish, lotion