annatto

noun, plural an·nat·tos.

1. Also called lipstick tree. a small tree, Bixa orellana, of tropical America.
2. Also arnatto. a yellowish-red dye obtained from the pulp enclosing the seeds of this tree, used for coloring fabrics, butter, varnish, etc.

noun plural -tos

1. 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