Search gender: all male female Kokuo Name Meaning, Kanji Variations. 1 names found. gender: all male female Name: kokuo Katakana: コクオ 0 Kanji: 穀夫 Meaning: 穀Grain. The staple food of man. 夫Husband. A man who is married. An adult male. A full-fledged man. A respectable man. A man engaged in labor. You can save your favorite names with NAZUKE PON > About Japanese Names > Search For Japanese Names > Kokuo Name Meaning, Kanji Variations.