How do you spell Oaring

Available Definitions:
1)  n - 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.
2)  n - An oarsman; a rower; as, he is a good oar.
3)  n - An oarlike swimming organ of various invertebrates.
4)  v. t. & i. - To row.