coquilla-nut

Co*quil"la nut. Etym: [Pg. coquilho, Sp. coquillo, dim. of coco a cocoanut.] (Bot.) Defn: The fruit of a Brazilian tree (Attalea funifera of Martius.). Note: Its shell is hazel-brown in color, very hard and close in texture, and much used by turners in forming ornamental articles, such as knobs for umbrella handles.

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