- (especially North American English) (also trailer North American English)
a small building for people to live in that is made in a factory and moved to a permanent place 活动住房 
- (British English) (North American English trailer)
a large caravan that can be moved, sometimes with wheels, that is usually parked in one place and used for living in 旅游房车；（拖车式）活动房屋
