Real Dictionary

coconut
countable noun: A coconut is a very large nut with a hairy shell, which has white flesh and milky juice inside it.

coconut in American English
the fruit of the coconut palm, consisting of a thick, fibrous, brown, oval husk under which there is a thin, hard shell enclosing a layer of edible white meat: the hollow center is filled with a sweet, milky fluid called coconut milk
noun: the large, hard-shelled seed of the coconut palm, lined with a white edible meat, and containing a milky liquid

coconut in British English
noun: the fruit of the coconut palm, consisting of a thick fibrous oval husk inside which is a thin hard shell enclosing edible white meat. The hollow centre is filled with a milky fluid (coconut milk)