(n.) The act of leaping or starting asunder.

blare blat blow open blow out bray break out burp burr burst burst forth burst out buzz cackle cascade caw chirr clang clangor clank clash craunch croak crump crunch debouchment discharge disgorge dissiliency eject eruct eructate eructation erupt eruption expel flare-up gas grind groan growl grumble gush hiccup hurl forth irrupt jangle jar jet outbreak outburst rapids rasp rush scranch scrape scratch scrunch snarl snore spate spew spout spurt torrent twang volcan vomit wind