One of the four humours of ancient and mediaeval physiology, that was believed to be secreted by the liver and to cause irascibility, anger, and bad temper when present in excess.

(uncountable) An edible species of tuna, Thunnus albacares, found in tropical seas.

An orange-yellow color, used in school buses in Canada and the United States.

Of an orange-yellow color, used in school buses in Canada and the United States.

(uncountable) The illness yellow fever. / (countable, nautical) A yellow flag used by ships as a warning of disease. / (countable) The fish Caranx bartholomaei.

A telephone directory that lists commercial organizations, organized by type of organization.

Of an animal or reptile having a yellow underside or belly. / (figuratively) Uncourageous, cowardly.

Synonym of white phosphorus

A passerine bird, Emberiza citrinella, of western Eurasia, which is mainly yellow in colour. / (US) The northern flicker, Colaptes auratus. / A native or resident of the American state of Alabama.

A bright yellow color used for New York taxicabs.