(idiomatic, colloquial) A sarcastic expression of disbelief. / (idiomatic, colloquial) A sarcastic expression of impatience.

Used other than figuratively or idiomatically: Having yellow skin. / (chiefly derogatory, offensive) Of Far East Asian descent.

(transportation engineering) A condition in which a traffic signal or signals display a yellow light facing traffic in one direction and a green light facing traffic in the opposite direction at the same intersection. This is considered a poor design because it may give drivers facing the yellow light the false belief that it is safe to turn in front of opposing traffic that has the green light.

plural of yellow trap

plural of pack year

plural of pack-year

Alternative spelling of pack-year.

Physalis crassifolia / Solanum villosum

A straight line painted on the side of a road, to indicate that parking is restricted

(medicine) A rare condition characterized by pleural effusions, lymphedema, and yellowish dystrophic nails.