oar / ôr/ • n. a pole with a flat blade, pivoting in an oar lock, used to row or steer a boat through the water. ∎ a rower.• v. [tr.] row; propel with or as with oars: oaring the sea like madmen | [intr.] oaring through the weeds. ∎ move (something, esp. the hands) like oars: her slender arms oaring the air.PHRASES: put in one's oar inf. give an opinion without being asked.rest on one's oars relax one's efforts.DERIVATIVES: oar·less adj.
Hence oarlock OE. ārloc; see ROWLOCK.