leech line
Webster's Dictionary (GCIDE)
Leech \Leech\, n. [Cf. LG. leik, Icel. l[imac]k, Sw. lik boltrope, st[*a]ende liken the leeches.] (Naut.) The border or edge at the side of a sail. [Written also leach.] [1913 Webster]
Leech line, a line attached to the leech ropes of sails, passing up through blocks on the yards, to haul the leeches by. --Totten.
Leech rope, that part of the boltrope to which the side of a sail is sewed. [1913 Webster]