lazy jack
noun
1
: a device that compensates for expansion and contraction (as in a pipe line) consisting of two linked bell cranks pivoted at the vertices of their complementary angles
2
: an often forked line reaching from the masthead or the topping lift on each side of a fore-and-aft sail to about the middle of the boom to confine the sail when it is lowered
—usually used in plural
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“Lazy jack.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/lazy%20jack. Accessed 22 Nov. 2024.
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