mó​lì

to sharpen

磨砺 磨礪 mó​lì
to sharpen
To sharpen a blade or tool on a grindstone; to make something sharp by rubbing it against an abrasive surface.
to discipline oneself
To steel or discipline oneself through practice and hardship; to improve one's character or skills by enduring trials.

Frequency

Movie subtitles
0.300 per million appears in 0% of films
Written text
1.71 per million

Sources