Definition of “island” - Learner’s Dictionary

island

noun [ C ] us uk /ˈaɪlənd/
a Mediterranean islanda remote island.an island off the coast of Spainin the extreme south of the islandan island with clean, unspoiled beaches

A2 an area of land that has water around it:

the Caribbean island of Grenada
the Hawaiian Islands
islander noun [ C ]

someone who lives on an island

→ See also desert island

(Definition of “island” from the Cambridge Learner's Dictionary © Cambridge University Press)