potshot
/ˈpɒt-ʃɒt/noun
1- a shot aimed unexpectedly or at random at someone or something with no chance of self-defence冷枪; 随意射击：
a sniper took a potshot at him.
一个狙击手向他开冷枪。
1.1
- figurative a criticism, especially a random or unfounded one〈喻〉（胡乱、无端的）批评：
the show takes wickedly funny potshots at as many movies as it can muster.
该节目把能搜集到的所有电影都刻薄地嘲弄了一通。
1.2
- a shot at a game bird or other animal purely to kill it for food, without regard to the rules of the sport（只为猎食, 无视狩猎规则的）滥猎射击。
词源
mid 19th cent.: originally a shot at an animal intended for the pot, i.e. for food， rather than for display (which would require skilled shooting).