or pur·line

[ pur-lin ]
/ ˈpɜr lɪn /


a longitudinal member in a roof frame, usually for supporting common rafters or the like between the plate and the ridge.

Origin of purlin

1400–50; late Middle English purlyn, purloyne, akin to Anglo-Latin perliō; of uncertain origin
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British Dictionary definitions for purlin



/ (ˈpɜːlɪn) /


a horizontal beam that provides intermediate support for the common rafters of a roof construction

Word Origin for purlin

C15: of uncertain origin
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012