jackstay

noun jack·stay \ ˈjak-ˌstā \

Definition of jackstay

1 : an iron rod, wooden bar, or wire rope along a yard of a ship to which the sails are fastened
2 : a support of wood, iron, or rope running up a mast on which the parrel of a yard travels

First Known Use of jackstay

circa 1840

in the meaning defined at sense 1

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