[ top-seyl; Nautical top-suh l ]
/ ˈtɒpˌseɪl; Nautical ˈtɒp səl /

noun Nautical.

a sail, or either of a pair of sails, set immediately above the lowermost sail of a mast and supported by a topmast.

Origin of topsail

First recorded in 1350–1400, topsail is from the Middle English word topseil. See top1, sail Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Examples from the Web for topsail

British Dictionary definitions for topsail

/ (ˈtɒpˌseɪl, nautical ˈtɒpsəl) /


a square sail carried on a yard set on a topmast
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012