'Barn' definitions:

Definition of 'barn'

From: WordNet
noun
An outlying farm building for storing grain or animal feed and housing farm animals
noun
(physics) a unit of nuclear cross section; the effective circular area that one particle presents to another as a target for an encounter [syn: barn, b]

Definition of 'Barn'

From: GCIDE
  • Barn \Barn\ (b[aum]rn), n. [OE. bern, AS. berern, bern; bere barley + ern, [ae]rn, a close place. [root]92. See Barley.] A covered building used chiefly for storing grain, hay, and other productions of a farm. In the United States a part of the barn is often used for stables. [1913 Webster]
  • Barn owl (Zool.), an owl of Europe and America ({Aluco flammeus}, or Strix flammea), which frequents barns and other buildings.
  • Barn swallow (Zool.), the common American swallow ({Hirundo horreorum}), which attaches its nest of mud to the beams and rafters of barns. [1913 Webster]

Definition of 'Barn'

From: GCIDE
  • Barn \Barn\, v. t. To lay up in a barn. [Obs.] --Shak. [1913 Webster]
  • Men . . . often barn up the chaff, and burn up the grain. --Fuller. [1913 Webster]

Definition of 'Barn'

From: GCIDE
  • Barn \Barn\, n. A child. See Bairn. [Obs.] [1913 Webster]

Definition of 'Barn'

From: Easton
  • Barn a storehouse (Deut. 28:8; Job 39:12; Hag. 2:19) for grain, which was usually under ground, although also sometimes above ground (Luke 12:18).