: a flat structure (as of wood) for support or transportation on water
"How shall we cross the river?" asked Dorothy. "That is easily done," replied the Scarecrow. "The Tin Woodman must build us a raft, so we can float to the other side." So the Woodman took his axe and began to chop down small trees to make a raft … L. Frank Baum
… has made a living poling a raft on the Suchiate for two decades … María Verza and Sonia Pérez
In addition to a gorgeous 400' long sandy beach with a swim raft, there are 44 boat docks which are licensed to individual … homeowners. Frank Roche
also: an inflatable flat-bottomed watercraft
Finally, the three astronauts, wearing their isolation garments, clambered out of the spacecraft into a rubber raft. Brian Duff
All my fishing gear, which sometimes included an inflatable raft, went into a backpack so that my hands would be free to carry my shotgun. Nelson Bryant
b
: a collection of logs or timber fastened together in order to be floated downstream (as to a sawmill)
Soviet loggers commonly float individual logs down rivers to sawmills, rather than lashing them together in rafts. A. Kent MacDougall
2
: a floating naturally cohesive mass
rafts of kelp
Home sites and hunting vantage points would have been undercut by the waves, salt meadows would have become angry shallow seas, and bitter salt and rafts of sea ice would have killed the willow brush and rich sedge meadows of the river deltas. William W. Fitzburg and Aron Crowell
3
: an aggregation of animals (such as waterfowl) resting on the water
… the logs which had been floating in them were swept down the river to the sea before being rafted away to the sawmills. D. A. Bathgate
c
: to convey (something, such as pebbles) in floating ice or masses of organic material
… sediment deposits are dominated by rock fragments released by melting ice. Even large rocks are rafted out and then released as the ice melts. M. Grant Gross
2
: to travel along or across (a river or other body of water) on a raft
Although the writing is somewhat pedestrian, river rats will enjoy the 27 accounts … of rafting rivers in 11 Western states. Tom Miller