What is a chain or rope, one end of which passes through the mast, and is made fast to the center of a yard; the other end is attached to a tackle, by means of which the yard is hoisted or lowered called?

tye — (Naut.) A chain or rope, one end of which passes through the mast, and is made fast to the center of a yard; the other end is attached to a tackle, by means of which the yard is hoisted or lowered. (Webster's 1913.)

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