[bɑːn], (Noun)

Definitions:
- a large farm building used for storing grain, hay, or straw or for housing livestock


Phrases:

Origin:
Old English bern, berern, from bere ‘barley’ + ern, ærn ‘house’

[bɑːn], (Noun)

Definitions:
- a unit of area, 10?²⁸ square metres, used especially in particle physics


Phrases:

Origin:
1940s: apparently from the phrase as big as a barn door