cacao /kəˈkaʊ/ noun3 •A tree, Theobroma cacao, whose seed is used to make chocolate. •The seed of this tree, the cocoa bean. •(rare) Cocoa (hot drink).“I wouldn’t mind something to drink,” Niko Daun said clearly. “You say you’ve got local cacao?” […] He set down the mug of cacao from which he’d been sipping with evident approval. — 1993 formscacaos