Sail (noun)

1. A large piece of cloth attached to a mast on a ship to catch the wind and propel the ship forward.
2. An act of sailing on a boat or ship.
3. A journey or excursion on a boat or ship.
4. A large flap of skin on a bird or mammal used for flying or gliding.
5. A flag or banner used to display information or for decoration.

Origin:

From the middle english word 'seil' meaning 'a piece of cloth attached to a mast to catch the wind'.

Examples:

1. The sail caught the wind and propelled the ship forward.
2. He went on a sail around the Caribbean.
3. The sail lasted three days.
4. The bat used its sail to glide between trees.
5. The sail displayed the company's logo.