Meaning of 目に入れても痛くない in Japanese

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Definition of 目に入れても痛くない

めにいれてもいたくない(meniiretemoitakunai) 【目に入れても痛くない】

(exp) thinking the sun shines out of someone's eyes; being the apple of one's eye
彼には娘は目にいれても痛くない。
His daughter is very dear to him.