belly flop
From Longman Dictionary of Contemporary EnglishRelated topics: Swimmingbelly flopˈbelly flop noun [countable] DSSa way of jumping into water, in which the front of your body falls flat against the surface of the water —bellyflop verb [intransitive]Examples from the Corpusbelly flop• The rest of the league has been waiting for a belly flop, but the Giants' cagey right-hander refuses to wilt.