noun A lump of mucus that has been spat out.
- Fischer sees it and gets red in the face, then hawks up a snotball and spits at my cleat. It hits dead on, and I shove him on the bench. He shoves me back, and I stand up.
— Brad Bauer, Hitting in the Clutch (2006)
- Without turning, Mike bent his head down just in time to avoid a huge snotball meant for his skull. Instead, a freshman a few feet away was the recipient of the unwholesome mucous present.
— Joseph C. Becker III, Eric A. Zilli (2002)
noun (informal) An insulting word used to describe someone you dislike.
- Don't it bother you that Jason Bent and those other little snotballs treat him like a doormat?
— Doug Lambeth, Itchy Donner (2007)