To sharpen a blade or tool on a grindstone; to make something sharp by rubbing it against an abrasive surface.

to sharpen or hone; to temper or discipline oneself by enduring hardships

To sharpen one's tools or weapons in preparation for a task; to be fully prepared and waiting to act.

To hone one's moral integrity and improve one's conduct.

to continue the struggle; to make unremitting efforts; to keep on going without stopping

to quench and sharpen a blade

To sharpen weapons and feed the horses; to be fully prepared for combat or a major challenge (commonly written as [[厉兵秣马|厲兵秣馬|li4 bing1 mo4 ma3]])

to hone one's character and maintain high moral principles