Coco

google

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mid 16th century (originally denoting the nut): from Spanish and Portuguese, literally ‘grinning face’ (because of the appearance of the base of the coconut).

wiktionary

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From Spanish/Portuguese coco(“grinning face”) (due to the three holes in the shell resembling a human face). [1]

etymonline

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coco (n.)

"palm tree," 1550s, from Spanish and Portuguese coco "grinning or grimacing face," on resemblance of the three depressions at the base of the shell to a monkey or human face. The earlier word for it was the Latinized form cocus, which sometimes was Englished as cocos.