Definition of 鬼に金棒 (おににかなぼう)
おにかなぼう
                        鬼に金棒
おににかなぼう
oninikanabou
expression
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making something strong even stronger, solidifying something's chances, (giving) a metal rod to an ogre(idiom )
Related Kanji
| 鬼 | ghost, devil | 
| 金 | gold | 
| 棒 | rod, stick, cane, pole, club, line |