jackstay(redirected from jackstays)
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1. A stay for racing or cruising vessels used to steady the mast against the strain of the gaff.
2. A rope, rod, or batten along the upper side of a yard, gaff, or boom to which a sail is fastened.
3. A rope or rod running vertically on the forward side of the mast on which the yard moves.
1. (Nautical Terms) a metal rod, wire rope, or wooden batten to which an edge of a sail is fastened along a yard
2. (Nautical Terms) a support for the parrel of a yard
1. a rod or batten, following a yard, gaff, or boom, to which one edge of a sail is bent.
2. a rail for guiding the movement of the hanks of a sail.