1. modifier Eliciting a strong feeling of disgust or revulsion, usually intentionally. With its paper-thin plot and gross-out humor, this movie will only appeal to the most juvenile of audiences.

2. noun Some thing, event, or situation that elicits a strong feeling of disgust or revulsion, whether intentionally or not. That new horror movie isn't even scary, it's just trying to be a big gross-out. There's a piece of meat in the fridge that's completely rotten. What a gross-out!