Dropped D Edit Meaning

1.

An alternate guitar tuning in which the lowest string is tuned down one whole step. Common in most forms of heavy metal. Makes it easier to play a power chord; the guitarist can simply lay one finger across the lowest three strings. Looked down upon for its facility, but powerful in the hands of a skilled guitarist (examples: Killing in the Name by Rage Against the Machine).

Often misspelled 'drop D' due to the assimilation of the d at the end of 'dropped' and the D at the beginning of 'D'.

-I'm trying to play along with this Soundgarden song but my guitar doesn't go low enough. WTF?

-You need to tune to dropped D.

See guitar, drop d, metal, heavy metal