"That scumbag dumped a whole carload of horseshit over his associates.; He thinks vinegar is alkaline? Don't you realize that's horseshit?; He claims that he wasn't at that meeting? Don't you realize that's horseshit?"
2.NounSerious harassment or abuse.
"That scumbag dumped a whole carload of horseshit over his associates."
3.NounBlatant nonsense, more likely stemming from ignorance than any intent to deceive.
"He thinks vinegar is alkaline? Don't you realize that's horseshit?"
4.NounDeliberate falsehoods (lies); manipulations or cons (fraud).
"He claims that he wasn't at that meeting? Don't you realize that's horseshit?"