See also: kii, kii-, kiʻi, ki'i, and kʼįįʼ English Proper noun Kii (historical) A former province of Japan, in the part of Honshu that is today Wakayama Prefecture. Synonyms Kīshū Navajo Etymology From ashkii (“boy”). Proper noun Kii a male given name (a common childhood nickname) A common name for a dog.Wikiwand - on Seamless Wikipedia browsing. On steroids.