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sit-up

[sit-uhp]
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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.
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Origin of sit-up

First recorded in 1835–45; noun use of verb phrase sit up
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for sit-up

Historical Examples

  • It seemed as if the very rabbits must come and sit-up there, the jays and pigeons settle above; everything in all the wood gather.

    Tatterdemalion

    John Galsworthy


Word Origin and History for sit-up

n.

also situp, kind of physical exercise, 1955, from the verbal phrase (attested from early 13c.); see sit (v.) + up (adv.). Related: Sit-ups.

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Online Etymology Dictionary, © 2010 Douglas Harper