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

1400–50; late Middle English purlyn, purloyne, akin to Anglo-Latin perliō; of uncertain origin

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To purlin
World English Dictionary
purlin or purline (ˈpɜːlɪn)
a horizontal beam that provides intermediate support for the common rafters of a roof construction
[C15: of uncertain origin]
purline or purline
[C15: of uncertain origin]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
Example sentences
The panels have a purlin bearing leg on the underlap leg of the panel.
The fasteners shall be located at each steel purlin.
He stepped on a purlin, an accepted industry practice, and it completely
  separated from its supporting members at each end.
The heavy strapping fastened across the bent will act as jibs for tackle used
  later to raise the purlin and wall plates.
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature