barn Meaning and Definition
1. n. an outlying farm building for storing grain or animal feed and housing farm animals
2. n. (physics) a unit of nuclear cross section; the effective circular area that one particle presents to another as a target for an encounter
A barn is an agricultural building usually located on farms and used for various purposes. In the North American area, a barn refers to structures that house livestock, including cattle and horses, as well as equipment and fodder, and often grain.
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