- 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
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for purline
- a horizontal beam that provides intermediate support for the common rafters of a roof construction
C15: of uncertain origin