Definitions for yezoˈyɛz oʊ
Random House Webster's College Dictionary
Category: Geography (places)
Ref: former name of Hokkaido .
Hokkaido, Ezo, Yezo(noun)
the second largest of the four main islands of Japan; to the north of Honshu
The Nuttall Encyclopedia
or Yesso, the northernmost of the four large islands of Japan, is about as large as Ireland; is traversed from N. to S. by rugged mountains, several of them active volcanoes; is rich in minerals, and particularly coal; its rivers swarm with salmon, but the climate is severe, and it is only partially settled.