butt-rock

== English == === Alternative forms === butt rock, Butt Rock === Etymology === Said to have begun as a parody of the phrase nothing but rock, reanalyzed as butt +‎ rock. === Noun === butt-rock (uncountable) (derogatory, informal, humorous) A style or subgenre of rock and roll music disparaged as uninteresting or out of fashion. For more quotations using this term, see Citations:butt-rock. (derogatory, informal, humorous) Post-grunge. (derogatory, dated, originally) Hair metal.