1. (noun)prince's-feather, gentleman's-cane, prince's-plume, red amaranth, purple amaranth, Amaranthus cruentus, Amaranthus hybridus hypochondriacus, Amaranthus hybridus erythrostachys tall showy tropical Americanannual having hairy stems and long spikes of usually red flowers above leaves deeply flushed with purple; seeds often used as cereal