purlin

Purlin is a support board of a roof.

(noun)

An example of a purlin is a horizontal wooden board holding up the rafters of a roof.

See purlin in Webster's New World College Dictionary

noun

a horizontal timber supporting the rafters of a roof

Origin: ME purlyn < ?

See purlin in American Heritage Dictionary 4

also pur·line

noun

One of several horizontal timbers supporting the rafters of a roof.

Origin:

Origin: Middle English

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