snotball noun2 •(slang) A ball of mucus ejected from the mouth.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. — 2002 •(offensive) A term of abuse.Don't it bother you that Jason Bent and those other little snotballs treat him like a doormat? — 2007 formssnotballs