air punch
noun [ C ] uk/ˈeə ˌpʌntʃ/ us/ˈer ˌpʌntʃ/
（成功时的）挥拳庆祝
an act of hitting upwards with your fist (= closed hand) to show that you are happy because you have been successful
There were air punches as he holed the ball. 他击球入洞后频频挥拳庆祝。