skysail
/ˈskaɪseɪl/Definitions
1. noun
A type of sail that is mounted above the main mast on a sailing yacht or ship, typically to harness wind from higher altitudes.
“The modern skysail was designed to optimize the performance of the yacht in various wind conditions.”
2. verb
To sail or navigate a vessel using a skysail.
“The sailors skysailed the yacht across the ocean, taking advantage of the favorable winds.”