skysail
/ˈskaɪˌseɪl/
noun
- A small sail set above the royal sail on a sailing ship, used in light winds.
- On the tall ship, the skysail was the highest sail that could be set.
- The crew climbed the rigging to unfurl the skysail in the gentle breeze.
- The captain ordered the skysail raised to catch the faint wind.