(now dialect, used with at, upon or infinitive) To urge on with cries of loo or (figuratively) by other shouting or outcry.

(slang) A lieutenant.

A cry to urge on hunting dogs.

(fashion, obsolete) A half-mask, particularly (historical) those velvet half-masks fashionable in the 17th century as a means of protecting women's complexion from the sun.

(transitive) To beat in the card game lanterloo. / To pay a penalty to the pool for breaking certain rules or failing to take a trick in lanterloo.

Alternative form of lanterloo: the card game. / The penalty paid to the pool in lanterloo for breaking certain rules or failing to take a trick. / An act that prompts such a penalty.

(India) A hot dust-bearing wind found in Bihar, Uttar Pradesh and the Punjab.

(UK, Australia, New Zealand) A lavatory: a room used for urination and defecation. / (UK, Australia, New Zealand) A toilet: a fixture used for urination and defecation.

A surname.

plural of loo