coconutco‧co‧nut /ˈkoʊkəˌnʌt/ noun [countable, uncountable] a very large brown nut which is white inside and has liquid in the middle [Origin: 1600–1700 coco “coconut” (16–18 centuries) (from Portuguese, “grinning face;” because the bottom of a coconut, with its three spots, looks like a face) + nut]