(n.) A device for producing a current of air; as: (a) A metal plate temporarily placed before the upper part of a grate or open fire. (b) A machine for producing an artificial blast or current of air by pressure, as for increasing the draft of a furnace, ventilating a building or shaft, cleansing gram, etc.
(n.) A blowing out or excessive discharge of gas from a hole or fissure in a mine.
(n.) The whale; -- so called by seamen, from the circumstance of its spouting up a column of water.
(n.) A small fish of the Atlantic coast (Tetrodon turgidus); the puffer.
(n.) An elastic spiral filament for dispersing the spores, as in some liverworts.
(n.) Any beetle of the family Elateridae, having the habit, when laid on the back, of giving a sudden upward spring, by a quick movement of the articulation between the abdomen and thorax; -- called also click beetle, spring beetle, and snapping beetle.
(n.) The caudal spring used by Podura and related insects for leaping. See Collembola.
(n.) The active principle of elaterium, being found in the juice of the wild or squirting cucumber (Ecballium agreste, formerly Motordica Elaterium) and other related species. It is extracted as a bitter, white, crystalline substance, which is a violent purgative.