Used other than figuratively or idiomatically: see jam, sandwich. / (Britain, slang) (from the common UK colour scheme of white with a red reflective horizontal band) A police car.

(music) An informal gathering of musicians to play music, especially improvised jazz or a similar genre.

A situation in which road traffic accumulates until it is stationary or very slow.

(basketball, rare) Synonym of alley oop.

(uncountable, slang) Sticky matter accumulated between digits of a foot. / (countable) A stubbed toe.

Alternative spelling of logjam

A spread made from cold tea and brown sugar.

(informal) Packed or filled tightly.

(transitive, informal) To pack or fill very tightly.

simple past tense and past participle of jam-pack