Meaning of かなぼう in Japanese

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Definition of かなぼう

てつぼう(tetsubou) · かなぼう(kanabou) 【鉄棒】

かなぼう(kanabou) 【金棒】

(n) metal rod
君が英語ができれば鬼に金棒なんだが。
If you could only speak English, you would be perfect.

かなぼうひき(kanabouhiki) 【金棒引き ·鉄棒引き】

おににかなぼう(oninikanabou) 【鬼に金棒】

(exp) making a strong person even stronger (like giving a metal rod to an ogre); as strong as can be