Something revolting is disgusting or distasteful; it turns your stomach and can offend your senses.
Things that are revolting are physically upsetting, like finding hair in your soup or stepping in dog poop. Eating spoiled food is revolting. Also, revolting things can be less physical. Learning that a friend lied to you is revolting. Corruption in government is revolting. Injustice is revolting. Many people find obscenity revolting. If it offends, disgusts, or upsets you, it's revolting.