the smallest of the four main islands of Japan, separated from Honshu by the Inland Sea: forested and mountainous. Pop: 4 137 000 (2002 est). Area: 17 759 sq km (6857 sq miles)
Shikoku in American English
(ˈʃikɔˌku)
one of the four main islands of Japan, south of Honshu: 7,258 sq mi (18,798 sq km); chief city, Matsuyama