imp. & p. p. of reave.n. A collection of logs, boards, pieces of timber, or the like, fastened together, either for their own collective conveyance on the water, or to serve as a support in conveying other things; a float.n. A collection of logs, fallen trees, etc. (such as is formed in some Western rivers of the United States), which obstructs navigation.n. A large collection of people or things taken indiscriminately.v. To transport on a raft, or in the form of a raft; to make into a raft.