sit-up
US /ˈsɪt.ʌp/
UK /ˈsɪt.ʌp/
1.
an exercise in which you lie on your back on the floor and raise the top part of your body to a sitting position
:
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He does 50 sit-ups every morning to strengthen his core.
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Can you do a perfect sit-up?
an exercise in which you lie on your back on the floor and raise the top part of your body to a sitting position