When your stomach growls but you have no correlating sensation of gastro-intestinal activity leading you to believe it was someone else's tummy groaning.
by wolfbait51 April 22, 2011
A ghost rule growl refers to the powerful note in the song Ghost Rule by DECO*27. Although the original song doesn’t actually use Hatsune Miku’s growl, people like to make compilations of stolen vocaloid covers of the song calling them “Growl Compilations”.
by GnomeoStan23 September 7, 2021