Real Dictionary

raft
countable noun: A raft is a floating platform made from large pieces of wood or other materials tied together.

raft in American English 1
a flat, buoyant structure of logs, boards, barrels, etc. fastened together; specif., one used like a boat as in an emergency or in shallow water
to travel, work, etc. on a raft
intransitive verb: to use a raft; go or travel on a raft
noun: a more or less rigid floating platform made of buoyant material or materials
transitive verb: to transport on a raft

raft in American English 2
a large number, collection, or quantity; lot
noun: a great quantity; a lot

raft in British English 1
noun: a buoyant platform of logs, planks, etc, used as a vessel or moored platform
verb: to convey on or travel by raft, or make a raft from

raft in British English 2
noun: a large collection or amount