IPA: /ˈtɒpseɪl/
KK: /ˈtɑːpseɪl/
A type of sail that is positioned above the lowest sail on a ship's mast, used in both square-rigged and fore-and-aft-rigged vessels.
The crew worked hard to raise the topsail as the wind picked up.
**Topsail** → The word is formed from "top" (from Old English *toppa*, meaning the highest part) and "sail" (from Old English *segel*, meaning a piece of fabric used to catch wind). The term "topsail" refers to the sail that is set above the main sail on a ship, thus representing the highest sail.
Think of the 'highest part' ('top') of a ship's sails — that's what a topsail is, the sail that is positioned above the main one.