(UK, informal) cowardly behaviour

plural of yellow streak

A bird, the yellowhammer.

(medicine) melena or black jaundice in infants

A yellow ochre sometimes used as a pigment.

plural of yellow bunting

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

A disease of elm trees, caused by phytoplasmas infecting the phloem, and eventually causing the crown to turn yellow from lack of nutrients.

(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