- The definition of a barn is a building separate from a main house, traditionally used for storing farm animals, equipment, or grain.
A place where chickens live and hay is stacked up is an example of a barn.
A red barn in the snow.Licensed from iStockPhoto
- a farm building for sheltering harvested crops, livestock, machines, etc.
- ☆ a large building for streetcars, trucks, etc.
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: Middle English ; from Old English bern, berern ; from bere, barley plush ærn, house: see rest
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- A large farm building used for storing farm products and sheltering livestock.
- A large shed for the housing of vehicles, such as railroad cars.
- A particularly large, typically bare building: lived in a barn of a country house.
- Abbr. b Physics A unit of area equal to 10-24 square centimeters, used to measure cross sections in nuclear physics.
Origin: Middle English bern, from Old English berǽrn : bere, barley; see bhares- in Indo-European roots + ǽrn, house.