- a small, inclined spar upholding the head of a quadrangular gaff topsail similar in form to a lugsail.
Origin of jackyard
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for jackyard
A jackyard topsail that requires no topmast can be set, and a spinnaker will be found very useful for running in light weather.
One yard ought to serve for both the gaff and jackyard topsail, and these sails should be made the same length on the head.
She might well have carried her jackyard topsail going west, and certainly wanted it, coming back with sheets off.Yachting Vol. 2
Jackyard topsails and bowsprit spinnakers preened before it.The Message