drop tuning 

guitar tuning where the bottom string is a perfect fifth lower than the next string, enabling the guitarist to play a powerchord with only one finger. the other strings are tuned the same as standard tuning. mostly used in metal.
most common examples:
drop D: DADGBE
dro C: CGCFAD
drop B: BF#BEG#C#
drop A: AEADF#B

drop tuning songs.
drop D-moby dick by led zeppelin
drop C-most bullet for my valentine songs
drop B-duality by slipknot
drop A-psychosocial by slipknot

drop tuning by Nicolo C May 8, 2011

drop tuning 

is the act of taking a guitar or bass and removing it from standard tuning (eadgbe) and lowering the tones, To whats called a drop Tuning.

i play in a drop tuning

drop tuning by BStuck July 6, 2009

drop & tuning 

the most metal tuning on any guitar. It involves removing the wooden part of the guitar completely by taking off the strings and burning the rest of the guitar. you then wave the strings in the air and the resulting noise is too metal to be heard

even dethklok hasn't mastered drop & tuning

drop & tuning by hfudncxjbfjdsahnjivsdh October 6, 2008

drop Z tuning 

when an instrument is soo out of tune there is no possible way to tune it by ear.

Dude by guitar yesterday at prctice must have been in drop Z tuning it took forever to figure out

drop Z tuning by superpunk May 12, 2010