- 1a large farm building for storing grain or keeping animals in a hay barn They live in a converted barn (= a barn that has been turned into a house).
- 2 a large, plain, ugly building They live in a big barn of a house.
- 3 a building in which buses, trucks, etc. are kept when not being used Idioms
to try to prevent or avoid loss or damage when it is already too late to do so
close, etc. the barn door after the horse has escapedjump to other results