jack rafter
noun
a rafter having less than the full length of the roof slope, as one meeting a hip or a valley.
Origin of jack rafter
First recorded in 1750–60
Words nearby jack rafter
jack pine,
jack plane,
jack plug,
jack post,
jack rabbit,
jack rafter,
jack robinson,
jack rod,
jack rope,
jack rose,
jack russell
British Dictionary definitions for jack rafter
jack rafter
noun
a short rafter used in a hip roof