鏤骨

Reading

Kana: るこつ

Romaji: rukotsu

Definition

noun

1

painstaking efforts

Kanji

鏤

Readings: ル、 ロウ、 ちりば.める

Meanings: inlay, set, mount

骨

Readings: コツ、 ほね

Meanings: skeleton, bone, remains, frame