RhymeZone: annatto definitions

Definitions of annatto:

noun: (countable) A tropical American evergreen shrub, Bixa orellana; the lipstick tree; the fruit of the tree.
noun: (uncountable) The seed of this tree used as a colouring or in Latin American cooking.
noun: (uncountable) An orange-red dye obtained from this seed.

(Definitions from Wiktionary)