/flæg ||; flæg/noun [C] a piece of cloth with a pattern or picture on it, often tied to a pole (flagpole) or rope and used as a symbol of a country, club, etc or as a signal 旗；旗子
flag²
/flæg ||; flæg/verb [I] (flagging;flagged) to become tired or less strong 变得疲累或衰弱 flag sb/sth down to wave to sb in a car to make him/her stop 挥手示意（汽车）停下: to flag down a taxi挥手示意出租车停下