Definition from Wiktionary, the free dictionary
shred (plural shreds)
- A long, narrow piece cut or torn off; a strip.
- In general, a fragment; a piece; a particle; a very small amount.
- There isn't a shred of evidence to support his claims.
- See also Wikisaurus:modicum.
Related terms 
fragment; piece; particle
- To cut or tear into narrow and long pieces or strips.
- (Can we find and add a quotation of Chaucer to this entry?)
- 1902, William Carew Hazlitt, Old Cookery Books and Ancient Cuisine:
- Take a little grated bread, some beef-suet, yolks of hard eggs, three anchovies, a bit of an onion, salt and pepper, thyme and winter-savoury, twelve oysters, some nutmeg grated; mix all these together, and shred them very fine, and work them up with raw eggs like a paste, ...
- (obsolete, transitive) To lop; to prune; to trim.
- (snowboarding) To ride aggressively.
- (bodybuilding) To drop fat and water weight before a competition.
- (music) To play very fast (especially guitar solos in rock and metal genres).
Derived terms 
to cut or tear into narrow pieces or strips
snowboarding: to ride aggressively
- shred in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913
- shred in The Century Dictionary, The Century Co., New York, 1911