Loo

UK: /ˈluː/ US: (lo̅o̅)

Inflections of 'loo' (n): npl: loos

Inflections of 'loo' (v): (⇒ conjugate)

loos

v 3rd person singular

looing

v pres p

looed

v past

looed

v past p

WordReference Random House Unabridged Dictionary of American English © 2026

loo¹  (lo̅o̅), n., pl. loos, v., looed, loo•ing. 
n. 

1. Games a card game in which forfeits are paid into a pool.
2. Games the forfeit or sum paid into the pool.
3. Games the fact of being looed.

v.t. 

4. Games to subject to a forfeit at loo.

• French lantur(e)lu, special use of meaningless refrain of an old song
• Dutch lanterlu
• short for lanterloo 1665–75

loo²  (lo̅o̅), n., pl. loos. [Brit. Informal.]

1. British Terms toilet.

• of uncertain origin, originally 1935–40

loo³  (lo̅o̅), v.i., v.t., n., pl. loos. [Chiefly Northern U.S.]

1. Dialect Terms low².

loo⁴  (lo̅o̅), n., pl. loos, v.t., v.i., looed, loo•ing. [Scot.]

1. Scottish Terms love.

Collins Concise English Dictionary © HarperCollins Publishers::

loo / luː/ noun (loos)

1. 
   an informal word for lavatory1

Etymology: 20th Century: perhaps from French lieux d'aisance water closet

loo / luː/ noun (loos)

1. a gambling card game
2. a stake used in this game

Etymology: 17th Century: shortened form of lanterloo, via Dutch from French lanterelu, originally a meaningless word from the refrain of a popular song

Collins Concise English Dictionary © HarperCollins Publishers::

lou, loo / luː/ verb

1. a Scots word for love