- (agriculture) A building, often found on a farm, used for storage or keeping animals such as cattle.
- (nuclear physics) A unit of surface area equal to 10-28 square metres.
- (informal, Canada, ice hockey) An arena.
- Maple Leaf Gardens was a grand old barn.
(third-person singular simple present barns, present participle barning, simple past and past participle barned)
- To lay up in a barn.
Middle English bern, from Old English bereærn 'barn, granary', compound of bere 'barley' and ærn, ræn 'dwelling, barn', from Proto-Germanic *razną (cf. Old High German erin, Old Norse rann), from pre-Germanic -, from Proto-Indo-European *h₁erh₁- 'to rest'. More at rest and barley.
- (dialect, parts of Northern England) A child.
From Middle English barn, bern, from Old English bearn (“child, son, offspring, prodigy”) and Old Norse barn (“child”). More at bairn.