Its a Go Hard Attitude with a Conquer All Mentality

Style with Ease

1. To 'slide' on a skateboard, often in a fashion which damages the surface used to slide.

2. To skate, snowboard, surf or BMX aggressively.

3. A form of longboard surfing which breaks the wave being 'shredded'

vi.

1. music: to play distorted electric lead guitar in a manner which is at once so extremely cogent and rapid that listener experiences the sensation that the production of the sound should be impossible or nearly impossible.

2. surfing: performing a series of cutbacks requiring seemingly impossible adeptness.

3. going every-which-way at once

to abuse a skatepark in the good way
(skate on it till your board snaps)

A guitar playing style or technique that was abandoned in the late 1980's.

The board of directors at MTV decided that learning to "shred", as it were, took too much time, patience, and work to do correctly, and thus was banned in early 1992, in favor of more lucrative cookie cutter style bands, with a higher turnover rate.

1. The art of Technically and rhythmatically hammering out amazing and lightning-fast solos on a guitar.
2. To play so amazingly fast on guitar you almost destroy it's strings.

"Shredding" as it is known is limited to the "True" Musicians and as such is not known to shitty Bands/Musicians of lesser talent, IE. Nu-Metal does not, can not and will not ever have shredding present in it's down-tuned watered down style of crap called "music".