Shikoku

(s̸hēkō̂ ko̵̅o̅′)

one of the four main islands of Japan, south of Honshu: 7,258 sq mi (18,798 sq km); chief city, Matsuyama

See Shikoku in American Heritage Dictionary 4

An island of southern Japan between southwest Honshu and eastern Kyushu. It was held by various feudal families from early times until c. 1600.
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