n. An imaginary flower supposed never to fade: used chiefly in poetry.n. A plant of the genus Amarantus (which see). The globe-amaranth, Gomphrena globosa, of the same natural order.n. A name given to mixtures of coloring matters of which the chief constituent is magenta (which see).n. Same as purple heart.n. An acid dyestuff, of the monoazo type, which dyes wool and silk a pure bluish red that is moderately fast to light and milling. It is known by various other names, as azo acid-rubine, Bordeaux S, and fast red.