(pos:名詞)
<explanation>
yue:寫得唔好嘅一筆，亦引伸為一件事入面唔完美嘅部分
eng:the stroke that was not well written; figuratively, flaw in something
<eg>
yue:個結局係成套戲唯一嘅敗筆。 (go3 git3 guk6 hai6 seng4 tou3 hei3 wai4 jat1 ge3 baai6 bat1.)
eng:The ending was the only flaw of the film.