jumping jack
US /ˈdʒʌmpɪŋ dʒæk/
UK /ˈdʒʌmpɪŋ dʒæk/

1.
점핑잭, 팔벌려뛰기
an exercise in which you stand with your feet together and your arms at your sides, then jump to a position with your legs spread wide and your arms extended overhead, and then return to the starting position
:
•
We started our workout with 20 jumping jacks.
우리는 20개의 점핑잭으로 운동을 시작했다.
•
Doing jumping jacks is a good way to warm up.
점핑잭은 좋은 워밍업 방법이다.