/ bɑːn; NAmE bɑːrn/ noun
1.
a 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) .
—see also Dutch barn
2.
a large plain ugly building :
They live in a great barn of a house.
3.
( NAmE ) a building in which buses, trucks, etc. are kept when not being used
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IDIOMS
- close, etc. the barn door after the horse has escaped
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WORD ORIGIN
Old English bern , berern , from bere barley + ern , ærn house .