CAT'S-PAW. A light air perceived at a distance in a calm, by the impressions made on the surface of the sea, which it sweeps very gently, and then passes away, being equally partial and transitory. Old superstitious seamen are seen to scratch the backstays with their nails, and whistle to invoke even these cat's-paws, the general forerunner of the steadier breeze. Cat's-paw is also a name given to a particular twisting hitch, made in the bight of a rope, so as to induce two small bights, in order to hook a tackle on them both. Also, good-looking seamen employed to entice volunteers. CAT'S-SKIN. A light partial current of air, as with the cat's-paw. CAT'S-TAIL. The inner part of the cat-head, that fays down upon the cat-beam. CAT-STOPPER, OR CATHEAD-STOPPER. A piece of rope or chain rove through the ring of an anchor, to secure it for sea, or singled before letting it go. CAT-TACKLE. A strong tackle, used to draw the anchor perpendicularly up to the cat-head, which latter is sometimes called cat. CATTAN. _See_ KATAN. CAT THE ANCHOR. When the cat is hooked and "cable enough" veered and stoppered, the anchor hangs below the cat-head, swings beneath it; it is then hauled close up to the cat-head by the purchase called the cat-fall. The cat-stopper is then passed, and the cat-block unhooked. CATTING. The act of heaving the anchor by the cat-tackle. Also, sea-sickness. CATTY. A Chinese commercial weight of 18 ozs. English. Tea is packed in one or two or more catty boxes, hence most likely our word tea-caddy. CAUDAL FIN. The vertical median fin terminating the tail of fishes. CAUDICARIÆ. A kind of lighter used by the Romans on the Tiber. CAUL. The membrane encompassing the head of some infants when born, and from early antiquity esteemed an omen of good fortune, and a preservative against drowning; it was sought by the Roman lawyers with as much avidity as by modern voyagers. Also, a northern name for a dam-dike. Also, an oriental license. (_See_ KAULE.) CAULK, TO. (_See_ CAULKING.) To lie down on deck and sleep, with clothes on. CAULKER. He who caulks and pays the seams. This word is mistaken by many for _cawker_ (which see). CAULKER'S SEAT. A box slung to a ship's side whereon a caulker can sit and use his irons; it contains his tools and oakum.