Meaning of trysail

try•sail

Pronunciation: (trī'sāl"Naut.trī's&schwal), [key]
— n. Naut.
  1. a triangular or quadrilateral sail having its luff hooped or otherwise bent to a mast, used for lying to or keeping a vessel headed into the wind; spencer.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.