ETYM Originally, a rafter, spar, and from Icel. raptr a rafter; akin to Dan. raft, Prov. German raff a rafter, spar; cf. Old High Germ. râfo, râvo, a beam, rafter, Icel. râf roof. Related to Rafter.
1. A flat float (usually made of logs or planks) that can be used for transport or as a platform for swimmers.
2. A large collection or number.
3. A floating cohesive mass.
4. An aggregation of animals (as waterfowl) resting on the water.