a long pole with a broad blade at one end, held in place by an oarlock and used in pairs to row a boat: a single oar is sometimes used in steering a boat
a person who uses an oar; rower
transitive verb, intransitive verb
to row
See oar in American Heritage Dictionary 4
(ôr, ōr)
noun
A long, thin, usually wooden pole with a blade at one end, used to row or steer a boat.