trailer in Irish

An unpowered wheeled vehicle (not a caravan or camper) that is towed behind another, and used to carry equipment, etc., that cannot be carried in the leading vehicle.

A short blank segment of film at the end of a reel, for convenient insertion of the film in a projector.

(computing) The final record of a list of data items, often identified by a key field with an otherwise invalid value that sorts last alphabetically (e.g., “ZZZZZ”) or numerically (“99999”); especially common in the context of punched cards, where the final card is called a trailer card.