The definition of a barn is a building separate from a main house, traditionally used for storing farm animals, equipment, or grain.(noun)
A place where chickens live and hay is stacked up is an example of a barn.
See barn in Webster's New World College Dictionary
Origin: arbitrary use, from phr. as big as a barnNuclear Physics a unit of area used to show the degree of probability that a nuclear reaction will occur: 1 barn = a magnitude of 10 sq cm per nucleus: abbrev. b
Origin: ME < OE bern, berern < bere, barley + ærn, house: see rest
See barn in American Heritage Dictionary 4
Origin: Middle English bern
Origin: , from Old English berǽrn
Origin: : bere, barley; see bhares- in Indo-European roots
Origin: + ǽrn, house.
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