n. A drawing upon a plane surface representing a part or the whole of the earth's surface or of the heavens, every point of the drawing corresponding to some geographical or celestial position, according to some law, of perspective, etc., which is called the projection, or, better, the map-projection. See projection.n. Figuratively, a distinct and precise representation of anything.To draw or delineate in a chart or map, as the configuration and position of any portion of land.Figuratively, to lay down as in a map; sketch, delineate, or describe minutely and accurately: often with out: as, to map out a course of study or reading.n. A dialectal form of mop.