oar

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A long, thin, usually wooden pole with a blade at one end, used to row or steer a boat.
2. n. A person who rows a boat, especially in a race.
3. v. To propel with or as if with oars or an oar.
4. v. To traverse with or as if with oars or an oar: an hour to oar the strait.
5. v. To move forward by or as if by rowing: oared strongly across the finish line.

Century Dictionary and Cyclopedia

1. n. A long wooden implement used for propelling a boat, barge, or galley. It consists of two parts — a flat feather-shaped or spoon-shaped part called the blade, which is dipped into the water in rowing, and; a rounded part called the loom, ending in a piece of less diameter than the rest, called the handle. The oar rests in a hole or indentation in the gunwale, called the rowlock or oar-lock, or between two pins called thole-pins, or in a metal rest or socket. The action of an oar in moving a boat is that of a lever, the rower's hand being the power and the water the fulcrum. Oars are frequently used for steering, as in whale-boats.
2. n. In brewing, a blade or paddle with which the mash is stirred.
3. n. In zoöl., an oar-like appendage of an animal used for swimming, as the leg or antenna of an insect or crustacean, one of the parapodia of annelids, etc.
4. n. One who uses an oar; an oarsman; also, a waterman.
5. To use an oar or oars; row.
6. To propel by or as by rowing.
7. To traverse by or as by means of oars.
8. To move or use as an oar.
9. n. An obsolete spelling of ore.

Wiktionary

1. n. An implement used to propel a boat or a ship in the water, having a flat blade at one end, being rowed from the other end and being normally fastened to the vessel.
2. v. To row; to propel with oars.

GNU Webster's 1913

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.
3. n. (Zoöl.) An oarlike swimming organ of various invertebrates.
4. v. To row.

WordNet 3.0

1. n. an implement used to propel or steer a boat