磋: polish

polish; hone

15 strokesNames & literary · Rare kanji (1級 range)in 2 words here

Readings

サ

Kun

みがく

Practically only in the four-character idiom 切磋琢磨 (せっさたくま), 'improving through friendly rivalry'.

切磋琢磨せっさたくまmutual improvement through rivalry

切磋せっさdiligent study; self-improvement

ライバル同士どうしが切磋琢磨せっさたくまして、互たがいに腕を上うでをあげていった。

The rivals pushed each other and both improved their skills.

同おなじ志こころざしを持もつ仲間なかまと切磋せっさする日々ひびが、彼かれを大おおきく成長せいちょうさせた。

Days spent training with like-minded friends helped him grow greatly.

部員ぶいんたちは切磋琢磨せっさたくましながら、全国ぜんこく大会たいかいを目指めざした。

The club members aimed for the national tournament, spurring each other on.