n.

1. 砰然的一击
2. 妙计；出乎意料的行动；成功之举
   The Summer baseball camp was a big coup for our school as it attracted over 200 students.

   我们学校推出的夏季棒球营有意想不到的成功，因为它吸引了200位学生。

3. 政变
   The failed coup of Turkey led to the purge of more than 1000 people.

   土耳其失败的政变导致一千多人被整肃。

n.

1. (also coup d'état) a sudden violent seizure of power from a government.
2. an unexpected and notably successful act.
3. Billiards  a direct pocketing of the cue ball, which is a foul stroke.
4. historical (among North American Indians) an act of touching an enemy, as a deed of bravery.