belly buster

plural belly busters

1. slangA very large meal.

   The food looks every bit as mouth-watering as the chain's 2,500-calorie belly-buster meals.

   2015, Tamara Thompson, Fast Food, page 29

2. slangA loud, exuberant laugh.

   Laughter from everyone. Even Mr. Poteet, tired of trying to drill history into the heads of the twins, lets out with a real belly buster.

   2008, Bill Blankenship, Daisy on Wheels, page 83

3. slangcard gamesA poker hand which is four cards to a straight, where only one rank can complete a straight. E.g. 3-4-6-7, only a five completes the straight.
4. oil industryA type of safety harness with a belt that wraps tightly around the belly.

   The derrickman releases the "stabbing board", a pivoting plank like a diving board, then walks out to the very end and, wearing a safety harness called a "belly buster", leans out at a horrific angle to make sure the pipe is lined up straight.

   2005, Paul Carter, Don't Tell Mum I Work on the Rigs, Crows Nest, NSW: Allen and Unwin, page 68