What is the slack part of a sail. Slab line (Naut.), a line or small rope by which seamen haul up the foot of the mainsail or foresail. Totten called?

slab — (Naut.) The slack part of a sail. Slab line (Naut.), a line or small rope by which seamen haul up the foot of the mainsail or foresail. Totten. (Webster's 1913.)

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