one of several parallel sloping beams that support a roof
source: WordNet 3.0
someone who travels by raft
source: WordNet 3.0
A raftsman.
source: Webster 1913
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.
