a small tropical American tree, Bixa orellana, having red or pinkish flowers and pulpy seeds that yield a dye: family Bixaceae
2.
the yellowish-red dye obtained from the pulpy outer layer of the coat of the seeds of this tree, used for colouring fabrics, butter, varnish, etc
Also called: annatta
Word origin
from Carib
annatto in American English
(əˈnɑtoʊ; ɑˈnɑtoʊ)
noun
a dye of reddish yellow made from the pulp around the seeds of a tropical dicotyledonous tree (Bixa orellana, family Bixaceae): it is used for coloring butter, cheese, varnishes, etc.