Definition of rafter

• n. - A raftsman.
• 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.
• v. t. - To make into rafters, as timber.
• v. t. - To furnish with rafters, as a house.
• v. t. - To plow so as to turn the grass side of each furrow upon an unplowed ridge; to ridge.