Ro″coa (?), n. [Cf. F. rocou, roicou, Pg. & Braz, urucú.] The orange-colored pulp covering the seeds of the tropical plant Bixa Orellana, from which annotto is prepared. See Annoto.
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Webster's Dictionary 1913
Webster's Revised Unabridged Dictionary, C. & G. Merriam Co., 1913.