WordReference Random House Unabridged Dictionary of American English © 2025
jack•stay
( jak′stā′),USA pronunciation n. [Naut.]
- Naval Termsa rod or batten, following a yard, gaff, or boom, to which one edge of a sail is bent.
- Naval Termsa rail for guiding the movement of the hanks of a sail.
- Naval Termsa transverse stay for stiffening a mast having a gaff sail, coming downward and outward from the head of the mast, passing over a spreader at the level of the gaff, then inclining inward to the mast again near the foot.
- Naval TermsSee jack rod.
- jack1 + stay3 1830–40
'jackstay' also found in these entries (note: many are not synonyms or translations):