Definition from Wiktionary, the free dictionary
- A deep, hearty laugh
2012 June 3, Nathan Rabin, “TV: Review: THE SIMPSONS (CLASSIC): “Mr. Plow” (season 4, episode 9; originally aired 11/19/1992)”:
- The classic episode “Mr. Plow” has more than its share of belly laughs and unforgettable moments but my favorite moment in it is so small and subtle that it’s easy to miss.
- (deep, hearty laugh): guffaw
- To laugh a belly laugh.