topsail: Meaning and Definition of
top•sail
Pronunciation: (top'sāl"Naut.top's&schwal), [key]
— n. Naut.
- a sail, or either of a pair of sails, set immediately above the lowermost sail of a mast and supported by a topmast. See diag. under ship.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.