日本国内航空 にほんこくないこうくう Meanings Noun Japan Domestic Airlines (1964-1971) Kanji 日 day 本 origin. Read as ホン. 国 country. Read as コク. 内 inside. Read as ナイ. 航 navigate. Read as コウ. 空 sky. Read as クウ. Jinuma: Japanese Dictionary · Word lists