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sit–up

2 ENTRIES FOUND:
sit–up /ˈsɪtˌʌp/ noun
plural sit–ups
sit–up
/ˈsɪtˌʌp/
noun
plural sit–ups
Britannica Dictionary definition of SIT–UP
[count]
: an exercise in which you lie on your back and use your stomach muscles to raise the top part of your body to a sitting position compare 2crunch 4