gaffsail
/ˈɡæfseɪl/
noun
- A four-sided sail that is set on a gaff (a spar that extends from the mast upward and backward).
- The crew raised the gaffsail to catch the afternoon breeze.
- On the old schooner, the gaffsail was made of heavy canvas.
- He learned to trim the gaffsail during his first sailing lesson.