noun
(dated, poetic) An imaginary flower that does not wither.
Any of various herbs of the genus Amaranthus.
The characteristic purplish-red colour of the flowers or leaves of these plants.
(organic chemistry) A red to purple azo dye used as a biological stain, and in some countries in cosmetics and as a food colouring. See Amaranth (dye).
(cooking) The seed of these plants, used as a cereal.