a trailer supported by a single pole attached to a vehicle by a coupling device at the forward end.

A road trailer that has a wheel system at the rear only and is coupled to a suitable tractor to form an articulated lorry. Frequently transferred…

A container trailer forming the rear part of an articulated lorry; a large container lorry.

A type of long low-loading road trailer originally used to transport tanks, aircraft, etc., during the Second World War (1939–45). Now chiefly histo…

U.S. (with pronunciation/ˈsɛmaɪ/) and Australian = semi-trailer, n.; semi-truck n. at semi-, prefix affix 2d.

A proprietary name for: a type of lorry trailer with curtain sides.

a type of lorry trailer with widely spaced axles. rare.

U.S. slang. A type of truck trailer with widely spaced axles. rare.

a trailer or articulated lorry with three (rear) axles.

= semi-trailer, n.