An archaic or alternative spelling of 'coconut,' the large brown nut from a tropical palm tree.
From Portuguese 'coco' (grinning face, from the resemblance of the nut's shell) + 'nut.' The spelling 'cocoanut' was common in English before 'coconut' became standardized in the 20th century.
The coconut's name literally comes from its 'face'—Portuguese sailors saw grinning faces in the three-marked shell!
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