Definition of "Raft" :

noun: a flat float (usually made of logs or planks) that can be used for transport or as a platform for swimmers

noun: a foundation (usually on soft ground) consisting of an extended layer of reinforced concrete

noun: (often followed by of') a large number or amount or extent

verb: make into a raft

"Raft these logs."

verb: travel by raft in water

"Raft the Colorado River."

verb: transport on a raft

"Raft wood down a river."