Meaning ofjackstayin English

Noun

1. a rope supporting a sail; running along a yard
   The sailor secured the sail to the jackstay to prevent it from flapping wildly.
2. a cable between ships or a ship and a fixed point; for load support
   The crew used a jackstay to transfer cargo between the two vessels at sea.
3. a safety line restraining movement; attached to a boat
   The captain attached a jackstay to the ship's rail for the crew's safety.