Definition of "stand-up"

stand-up

adjective
comparative more stand-up, superlative most stand-up
1. Honest; honorable.
2. Upright; while standing.
3. Performed while standing although normally done while sitting.
4. (baseball, of a hit) That allows the batter to advance to a given base (usually second or third) without having to slide.
noun
countable and uncountable, plural stand-ups
1. (uncountable) A performance of stand-up comedy; jokes delivered standing on a stage
2. (countable) A comedian who performs on stage.
3. (countable) A news broadcast delivered by an announcer who is filmed standing near the scene of the event.
  Quotations
  Reporters covet standups rather than the voiceover narration of news footage because it puts their faces on the air.
  2012, R. M. Reed, M. K. Reed, The Encyclopedia of Television, Cable, and Video, page 508
4. (countable) A short meeting throughout which participants remain standing (to encourage brevity).
  Quotations
  Esther Crawford, a project manager, asked people to join a “standup” meeting at 9:30 p.m. in San Francisco on Thursday as some layoff notices went out.
  2022 November 4, Kate Conger, Ryan Mac, Mike Isaac, “Confusion and Frustration Reign as Elon Musk Cuts Half of Twitter’s Staff”, in The New York Times‎
5. (countable) A free-standing photographic print or promotional item; a standee.