Search gender: all male female コクシボウ Japanese Boy Names Variations. 1 names found. gender: all male female Name: kokushibo Katakana: コクシボウ 40 Kanji: 黒死牟 Meaning: 黒Black. Dark. Bad things. Guilty. 死Death. Die. Risking one's life. To be prepared to die. cease to be active. to become useless. 牟Crying Cow You can save your favorite names with NAZUKE PON > About Japanese Names > Search Japanese Names By Kanji > コクシボウ Japanese Boy Names Variations.