jack rafter (English, noun)
expansion: jack rafter (plural jack rafters)
Senses:
glosses: One of the shorter rafters used in constructing a hip roof.
tags: UK
glosses: Any secondary roof timber, such as the common rafters resting on purlins in a trussed roof; also, one of the pieces simulating extended rafters, used under the eaves in some styles of building.
tags: US
Forms:
form: jack rafters
tags: plural