Sail hook

a small hook used in making sails, to hold the seams square.

See also: Sail

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
Bunce (Bill Camp) is a well-traveled merchant seaman who once jabbed a sail hook into his neck to feign a scurvy infection, and for years has nursed a gaping wound in his side.