河太郎 かわたろう Also written がわたろう, がたろう, があたろ, がたろ, 川太郎 Meanings Noun kappa (mythical water-dwelling creature) See also: 河童 (かっぱ). Kanji 河 river. Read as かわ. 太 thick 郎 son. Read as ロウ. Jinuma: Japanese Dictionary · Word lists