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Definition of sit–up
: a conditioning exercise performed from a supine position by raising the torso to a sitting position and returning to the original position without using the arms or lifting the feet
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First Known Use of sit–up
1938
SIT–UP Defined for English Language Learners
sit-up
play
noun
Definition of sit–up for English Language Learners
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: 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
SIT–UP Defined for Kids
sit–up
play
noun
\ˈsit-ˌəp\
Definition of sit–up for Students
: an exercise done by lying on the back and rising to a sitting position
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