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.
「磨淬」は、刀を研ぎ澄ますこと、また転じて学問や技芸を磨くことを意味する古い言葉だ。
磨淬 is an old word meaning to polish a sword, and by extension, to refine one's learning or skills.