expression, godan verb (-ru)
break off writing; give up writing; lay down one's pen
Idiomatic expression meaning to stop writing, often permanently or as a career decision. Literally 'to break one's brush/pen'.
彼は小説家として筆を折る決心をした。
He decided to give up writing as a novelist.
あの事件をきっかけに、彼
After that incident, she broke off writing for good.