投笔从戎 tóubǐcóngróng to join the military Origin Definitions Defs Strokes Stroke Words Sentences Sents 投 tóu verb to throw to throw; to fling; to toss something toward a target笔 筆 bǐ noun pen writing or drawing instrument; pen; pencil; writing brush从戎 從戎 cóngróng to join the army to enlist or join the military; to serve in the army