Yarl Definition
    noun
  
 A deep, guttural vocal style with affected pronunciation, characteristic of male grunge and postgrunge singers of the 1990s and early 2000s.
Wiktionary 
    verb
  
 To sing in this manner.
Wiktionary 
Origin of Yarl
Presumably onomatopoeic. Coined by Josh Sinder and Alex Sibbald of the band Hot Rod Lunatics.
From Wiktionary
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