topsail
noun [ C ] uk/ˈtɒp.seɪl/ us/ˈtɑːp.seɪl/
（三节桅的）中桅帆;（二节桅的）上桅帆
a sail that is above another sail on a sailing boat
He clambered up the rigging to unfurl the topsails. 他爬上索具，展开上桅帆。
Winds blasted the ship, her topsails rapidly filling with wet, heavy snow. 狂风向船扑来，上桅帆瞬间兜满了厚厚的湿雪。
- More examples
- Both our topsails gave way by the force of the gale.
- They climbed the mast to free the topsails.
- Topsails would be a nuisance and a danger for a crew of two.