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n. Nautical
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.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


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
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014



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.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
Antony witnessed the INS Shivalik execute various evolutions, including a 'surface gun shoot' and a Jackstay with the INS Shakti in copybook fashion.
One of the physical challenges was going from ship to ship on a "jackstay." Basically, he explains, two very large ships moving at a speed of 10 to 12 knots pull up alongside each other.
Manoeuvre of submarines in deep blue sea, followed by jackstay, a seamanship evolution carried out in very close proximity to enable transfer of stores and personnel from one ship to another while moving through the water also lent moments of thrills to the onlookers.