n 1 : any of several dark red to black tannin-containing dried juices or extracts obtained from various tropical trees; : esp : the dried juice obtained usu. from the trunk of an East Indian tree (Pterocarpus marsupium) as brown or black fragments and used as an astringent in diarrhea 2 : a tree that produces kino (esp. Pterocarpus marsupium) .
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