SCULL

I. noun Etymology: Middle English skulle Date: 14th century 1. an oar used at the stern of a boat to propel it forward with a thwartwise motion, either of a pair of oars usually less than 10 feet (3 meters) in length and operated by one person, a racing shell propelled by one or two persons using ~s, II. verb Date: 1624 transitive verb to propel (a boat) by ~s or by a large oar worked thwartwise, intransitive verb to ~ a boat, ~er noun