Define Drop Tuning Meaning

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

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.

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

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

An alternate tuning for the guitar, CGCFAD as opposed to EADGBE. More commonly (and mistakenly) referred to as Drop C.

Many bands utilize this particular tuning, including, but not limited to, As I Lay Dying, Killswitch Engage, System of a Down, Children of Bodom, Lostprophets, Breaking Benjamin, Bullet For My Valentine, Rammstein, Atreyu, Senses Fail, From First To Last, Metallica, Norma Jean, Thrice, A7X, and The Red Jumpsuit Apparatus.