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1.
Used to discribe new wave music of the sixties combining rock, blues, and psychedellia.
Hendrix's solos sometimes became spiritual with fans of acid rock.
by Tommy the Prophet March 03, 2005
 
2.
It defines the drug related rock music of the 1960's and 1970's
Velvet underground - Heroin
by me March 23, 2004
 
3.
A type of rock music that is used as background mood music for taking lsd and most of the songs were written by musicians who were on it at the time and promotes the taking of lsd and was the favorite music of the 1960's hippie generation and also of the neohippie movement and of dark hippies.
I love acid rock.
by Deep blue 2012 March 20, 2010
 
4.
A genre of music that is believed to have been started by The Grateful Dead. It is what older people call heavy metal.
The Grateful Dead played at the acid test in San Francisco in the 60's.
by Freak Face February 10, 2005
 
5.
In the 1970's and 1980's, what older people used to call heavy metal and hard rock. Now most of those people are dead, but sometimes you'll hear someone say it at the retirement home.
Junior, cut your sideburns and stop listening to that Acid Rock or you'll start worshipping Satan!
by Jack Batemaster January 07, 2004