Examples from the Web for trysail
Trysail was placed in the launch, at the head of a strong party of boarders.
A snow was a small vessel like a brig except for having a supplementary third, or trysail, mast.
The Old Man came up on deck and looked round, and in less than a minute he told us to give her the trysail.Wandering Ghosts|F. Marion Crawford
I make no complaints, and am a happy man at sea, and I piously hope Mrs. Trysail knows how to submit to her duty at home.
I expect we'll be able to shake the reefs out of the trysail and beat up for the Inlet before it's dark.Thrice Armed|Harold Bindloss