What does rafter mean?
A rafter is a structural beam that helps support a roof. In traditional timber-frame construction, rafters run from the wall plate toward the ridge and support the roof covering, while a complete series of them forms part of the roof frame. The word is also used, particularly in North America, as a collective noun for a group of turkeys. In ordinary discussion, however, “rafter” most often refers to the visible or concealed wooden beam itself. It is useful because it names a specific element of a roof structure rather than a generic support, and it can add a vivid regional or sporting flavor when used in its collective-noun sense.
A structural beam forming part of a roof, usually one of a parallel series that supports the roof covering.
"The carpenters replaced the damaged rafter before installing new roofing."
Technical and construction contexts commonly distinguish rafters from other roof members such as trusses, joists, and purlins.
A group of turkeys.
"The farmer watched a rafter of turkeys cross the pasture."
This collective-noun sense is especially associated with North American English and is less common in formal writing.
The standard plural is used for individual roof beams, such as the rafters of a house. In the collective sense referring to turkeys, it is generally used with a singular determiner and plural agreement, as in “a rafter of turkeys.”
"The exposed rafters frame the open ceiling."
A rafter is one roof beam, but in one of its dictionary meanings it can be a whole group of turkeys.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does rafter come from?
The word comes through Middle English raftern from Old English hræfter, meaning a beam used in roof construction. Its deeper origin is Germanic, and it is related to words such as German Rafter and Dutch raaf, referring to a roof beam. The word is also etymologically connected with raft, although the modern words have developed distinct meanings: a rafter is a supporting beam, while a raft is a floating platform.
How rafter is actually used
In construction terminology, rafters are generally distinguished from trusses and other roof-supporting members by their role and arrangement within the roof frame. The sense meaning a group of turkeys is informal and especially associated with North American English.
Easily confused with rafter
A rafter is a supporting beam in a roof, whereas a raft is a floating platform or group of people or animals.