磨ま淬さい

noun

polishing one's sword; improving one's talents or knowledge

Rare literary term. Literally refers to polishing a sword, and figuratively to refining one's skills or learning. Not used in everyday speech.

• 「磨ま淬さい」は、刀かたなを研とぎ澄すますこと、また転てんじて学がく問もんや技ぎ芸げいを磨みがくことを意い味みする古ふるい言こと葉ばだ。

  磨淬 is an old word meaning to polish a sword, and by extension, to refine one's learning or skills.