• (n.) Seeds of the annotto tree; also, the coloring matter, annotto.
The seed of the annatto tree, pounded into a powder and mixed with garlic, vinegar and spices. It's used in Southwestern, Mexican and Caribbean Cuisines.
A`chi·o'te noun [ Spanish achiote , from Indian achiotl .] Seeds of the annotto tree; also, the coloring matter, annotto. 
(Mexican) Red paste made from annatto seeds.