n. In ordnance, an attachment, to a projectile for use at night, provided with a burning composition by means of which, when the projectile is fired from a gun, its path throngh the air is rendered visible.n. One who or that which traces, in any sense.n. A small slender steel instrument, having a handle in the middle and its ends pointed more or less, and one of them usually also curved and edged, used in dissection as a compromise between scalpel and probe for tracing out the course of nerves, vessels, etc. It is usually held like a pen, and may be pushed into or drawn through tissue, as desired. Also called seeker.n. One whose duty it is to trace or search out missing articles, as railway-cars, milk-cans, or letters.n. c) An inquiry sent out from a post-office, express-office, railway-station, or other establishment after some missing letter, package, car, etc.n. One who copies or makes tracings of drawings, etc.n. An instrument, like a stylus, for tracing drawings, etc., on superimposed paper.n. A simple kind of pantograph.n. A form of outline-or copying-machine. It consists essentially of a long bar balanced by means of a universal joint near one end. The longer arm is directed toward the drawing, design, or other work to be copied on a reduced scale, and the shorter arm carries a pencil. On moving the point of the long arm over the work, the pencil on the short arm reproduces a reduced copy of the work on paper held before it. By reversing the relative positions of the pointer and pencil, an enlarged copy may be made. Also called tracing-machine.n. A tool, sometimes a small smooth-edged wheel set in a handle, by means of which a continuous line is impressed, as in ornamental metal-work.