SAILS

noun

1. A piece of fabric attached to a boat and arranged such that it causes the wind to drive the boat along. The sail may be attached to the boat via a combination of mast, spars and ropes.
2. (nautical,uncountable) The concept of a sail or sails, as if a substance.
3. The power harnessed by a sail or sails, or the use of this power for travel or transport.

verb

1. To be impelled or driven forward by the action of wind upon sails, as a ship on water; to be impelled on a body of water by steam or other power.
2. To move through or on the water; to swim, as a fish or a waterfowl.
3. To ride in a boat, especially a sailboat.