n. A duct for the conveyance of air, smoke, heat, or gases.n. A pipe or tube for conveying heat to water in certain kinds of steam-boilers.n. A passage in a wall for the purpose of conducting heated air from one part of a building to another.n. [See etym.] The winding hollow of a sea-shell.n. In organ-building, a flute-pipe as distinguished from a mouth-pipe or reed-pipe.n. The coping of a gable or end-wall of a house, etc.To expand or splay, as the jambs of a window.n. Down or nap; waste downy matter, abounding in spinneries, lint-factories, etc.; downy refuse; fine hair, feathers, flocks of cotton, etc., that cling to clothes.Shallow.n. In whaling, the fluke or barb of a harpoon.n. A money of account of Morocco, of the value of one twenty-fifth of an English penny, or one thirteenth of a cent.n. Influenza.n. A fishing-net, stationary or used as a drag-net.