Definition of storm sail in English:

storm sail

noun

  • A sail of smaller size and stronger material than the corresponding one used in ordinary weather.

    • ‘While the other sailors took down all of the regular sails, Buddy and Jacob hoisted up a small, thick sail called the storm sail.’
    • ‘The high winds had progressively blown out the 36-foot Gulfstar sloop's main, jib and storm sails, leaving the vessel under power only.’
    • ‘Second, winds up to 30 mph do not progressively blow out main, jib, and storm sails, unless those sails are completely unfit for such a trip, or were not reefed appropriately.’