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1.
1. Noun referring to a heavy metal fan who subscribes to the ideology of heavy metal purism.

2. Noun referring to a heavy metal musician who does not incorporate elements from outside of the heave metal genre into his or her music.

Also referred to as 'metal purist' or 'metal-purist'.
When the name of Kuopio's choirmaster was revealed in autumn, heavy metal purists got upset.

Following the breakup of the Runaways and the huge success of Joan Jett's first two albums, Lita Ford emerged as a solo artist and a true heavy metal purist.
by Master of Evöl March 05, 2011