rafts is a form of:

Raft



noun
1.
(a flat floating structure made of timber or other materials used especially as a substitute for a boat. a large collection of things) ក្បួន
ENGLISH MEANING
noun
1.
A large collection of people or things taken indiscriminately.
2.
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.
3.
A collection of logs, fallen trees, etc. (such as is formed in some Western rivers of the United States), which obstructs navigation.
verb
1.
(TRANSITIVE) To transport on a raft, or in the form of a raft; to make into a raft; as, to raft timber.