English Etymology Named after a former owner of the island, businessman Louis Lenagan. Pronunciation IPA(key): /ˈlɛn.ə.ɡən ˈaɪ̯.lənd/ Hyphenation: Len‧a‧gan Is‧land Rhymes: -aɪlənd Proper noun Lenagan Island An island in Trinidad and Tobago. Wikiwand - on Seamless Wikipedia browsing. On steroids.