a long pole with a flat blade at one end that is used for rowing a boat
He pulled as hard as he could on the oars.We took one oar each and rowed quickly to the shore. compare paddleIdioms
put/stick your oar in
(British English, informal) to give your opinion, advice, etc. without being asked and when it is probably not wantedSynonym
interfereI was getting along very nicely until Patrick stuck his oar in.

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