Rafter n. : A raftsman.

Rafter n. : Originally, any rough and somewhat heavy piece of timber. Now, commonly, one of the timbers of a roof which are put on sloping, according to the inclination of the roof. See Illust. of Queen-post.

Rafter v. t. : To make into rafters, as timber.

Rafter v. t. : To furnish with rafters, as a house.

Rafter v. t. : To plow so as to turn the grass side of each furrow upon an unplowed ridge; to ridge.

Example:
How do I find a stud or support Rafter in my ceilling without a stud finder?

Taxonomy
rafter, free encyclopedia, Patrick Rafter, roof, trussed rafters, Truss, search, poles, gallerie, tie-in, Bequet, Ribault, Ste. Geneviève, Missouri, one of three, poteaux-en-terre, structural members, ridge, hip.

Defination from the web:
rafter poles for the gallerie tie-in. The Bequet-Ribault House was built c. 1793 near Ste. Geneviève, Missouri. ... A rafter is one of a series of sloped structural members, that extend from the ridge or hip to the downslope perimeter or eave, designed to ...