Sit-up (noun) Definition, Meaning & Examples

noun
  1. an exercise in which a person lies flat on the back, lifts the torso to a sitting position, and then lies flat again without changing the position of the legs: formerly done with the legs straight but now usually done with the knees bent.
verb (adverb)
  1. to raise (oneself or another) from a recumbent to an upright or alert sitting posture
  2. to remain out of bed and awake, esp until a late hour
  3. to become suddenly interested or alert
noun sit-up
  1. a physical exercise in which the body is brought into a sitting position from one lying on the back
Sit-up (noun) Definition, Meaning & Examples

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