(US) To make a sudden, rapid movement

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.

A sweet mixture of fruit boiled with sugar and allowed to congeal. Often spread on bread or toast or used in jam tarts. / (countable) A difficult situation.

To get something stuck, often (though not necessarily) in a confined space. / To brusquely force something into a space; to cram, to squeeze. / To render something unable to move.

(dated) A kind of frock for children.

(mining) Alternative form of jamb

A piece of clothing worn on the upper body outside a shirt or blouse, often waist length to thigh length. / A piece of a person's suit, beside trousers and, sometimes, waistcoat; coat (US)

To confine (someone) to a straitjacket. / (transitive) To enclose or encase in a jacket or other covering.

A semiprecious stone, either nephrite or jadeite, generally green or white in color, often used for carving figurines.

Of a grayish shade of green, typical of jade stones.