buâ磨

to grind

to grind; to sharpen; to rub; to chafe; to wear away; to obliterate; to wear out; to wear down; to erode

English Wiktionary, “磨” (CC BY-SA 4.0) — https://en.wiktionary.org/wiki/%E7%A3%A8 · confidence: High (Wiktionary, PH/Quanzhou/Jinjiang)