An implement for impelling a boat, being a slender piece of timber, usually ash or spruce, with a grip or handle at one end and a broad blade at the other. The part which rests in the rowlock is called the loom.
An oarsman; a rower; as, he is a good oar.
An oarlike swimming organ of various invertebrates.
There are no galley-slaves in the royal vessel of divine love - every man works his oar voluntarily! Saint Francis de Sales
A straight oar looks bent in the water. What matters is not merely that we see things but how we see them. Michel de Montaigne
There are some people who leave impressions not so lasting as the imprint of an oar upon the water. Kate Chopin
Two such as you with such a master speed, cannot be parted nor be swept away, from one another once you are agreed, that life is only life forevermore, together wing to wing and oar to oar. Robert Frost
I don't believe in just ordering people to do things. You have to sort of grab an oar and row with them. Harold S. Geneen