shred

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A long irregular strip that is cut or torn off.
• noun A small amount; a particle.
• intransitive verb To cut or tear into shreds.
• intransitive verb To use a mechanical shredder to shred (paper documents, for example).
• intransitive verb To make a series of quick turns on a wave or snow, for example, when riding a board such as a surfboard or snowboard.
• intransitive verb To play fast solos accompanied by special techniques on the electric guitar.

from The Century Dictionary.

• noun A bit, scrap, fragment, rag, or strip made by cutting or tearing up something: used specifically of cloth or list for nailing up plants.
• noun Figuratively, a bit; a particle; also, something that is like a scrap or fragment in being worn or valueless, or in having a forlorn appearance.
• To cut or tear into small pieces; also, to cut or tear pieces from.
• To tear into pieces, either small and irregular, or long in proportion to their width; tear into ragged bits, scraps, or strips: as, to shred old linen.
• To prune; lop; trim, as a pole or a hedge.

from the GNU version of the Collaborative International Dictionary of English.

• transitive verb To cut or tear into small pieces, particularly narrow and long pieces, as of cloth or leather.
• transitive verb obsolete To lop; to prune; to trim.
• noun A long, narrow piece cut or torn off; a strip.
• noun In general, a fragment; a piece; a particle.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A long, narrow piece cut or torn off; a strip.
• noun In general, a fragment; a piece; a particle; a very small amount.
• verb To cut or tear into narrow and long pieces or strips.
• verb obsolete, transitive To lop; to prune; to trim.
• verb snowboarding To ride aggressively.
• verb bodybuilding To drop fat and water weight before a competition.
• verb music To play very fast (especially guitar solos in rock and metal genres).

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a small piece of cloth or paper
• verb tear into shreds
• noun a tiny or scarcely detectable amount