squeaker

From squeak +‎ -er (“agent”).

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squeaker (plural squeakers)

1. One who or that which squeaks.
   1. (Internet slang) A young user on a voice chat system who has a high-pitched voice.
2. A party toy that uncoils with a squeaking sound when blown; a party puffer.
3. (slang) An informer.
5. (US) A game or election won by a narrow margin.
   • 2024 October 3, Dana Taylor, “Allan Lichtman shares his 2024 presidential election prediction (podcast transcript)”, in USA Today‎, The Excerpt:

     I mentioned that you correctly predicted nine of the last 10 presidential election outcomes, save one, in 2000 when George W. Bush defeated Al Gore, and that was a squeaker.

6. An animal that squeaks.
   1. An Australian grey crow-shrike or grey currawong (Strepera versicolor plumbea).
   2. A piglet of the wild boar.
   3. Any of family Arthroleptidae, of frogs.
   4. Any of genus Synodontis, of catfish.
   5. A young bird; a cheeper.
      1. A squab or young domestic pigeon still in the nest.
7. (slang) An act of flatulence; a fart.
   • 2014, Daley James Francis, Walking Up a Slide:

     He sat down, let out a squeaker, and then unloaded his entire wedding breakfast into the pan. Cheers buddy. Nothing kills a moment of nostalgia better than a fat man using the shithouse.

8. (slang) A child, especially an illegitimate one.

• “squeaker”, in OneLook Dictionary Search.
• squeaker on Wikipedia.Wikipedia
• Strepera on Wikispecies.Wikispecies

• “squeaker n.”, in Green’s Dictionary of Slang, Jonathon Green, 2016–present