The characteristic purplish-red colour of the flowers or leaves of these plants.
A red to purple azo dye used as a biological stain, and in some countries in cosmetics and as a food colouring.
Any of various herbs of the genus Amaranthus.
The seed of these plants, used as a cereal.
An annual garden plant (Celosia argentea var. cristata, syn. Celosia cristata), having showy red clusters of flowers
A yellow rattle, Rhinanthus minor (flowering plant native to Eurasia)
The fleshy red crest of a rooster
A serrated cleat once fitted to the yards of a square-rigged ship and used when the sail was being reefed
A red cap once worn by court jesters