Also found in: Dictionary.

purlin, purline

A piece of timber laid horizontally on the principal rafters of a roof to support the common rafters on which the roof covering is laid. Compare with subpurlin; also See common purlin, principal purlin, ridge purlin, and through purlin.
References in periodicals archive ?
00 m, purline rests (conifer j / s, class II) 5/12 l = 6.
Tenders are invited for Repairs To Roof Pre Coated Cgi Sheet Purlines Rafters And Roof Painting To Existing Roof Sheet At Zakhama Mil Stn
Tenders are invited for Construction of shed %supplying, hosting, and placing in postion tubular trussed, including runners purlines consisting of steel tubes corrugated asbestos sheets, fiber sheets, wire mess jali, ridges & vellies all other work contingent thereto in Animal Hospital Ward No.