spritsail

noun1

1. •
   A form of three- or four-sided fore-and-aft sail and its rig, supporting the leech of the sail by means of a sprit.

   • Finding it was like to overblow, we took in our Sprit-sail, and stood by to hand the Fore-sail; but making foul Weather, we look'd the Guns were all fast, and handed the Missen. — 1726