'Trysail' definitions:
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Trysail \Try"sail\, n. (Naut.)
A fore-and-aft sail, bent to a gaff, and hoisted on a lower
mast or on a small mast, called the trysail mast, close abaft
a lower mast; -- used chiefly as a storm sail. Called also
spencer. --Totten.
[1913 Webster]
