Dictionary.com
Thesaurus.com

defibrate

American  
[dee-fahy-breyt] / diˈfaɪ breɪt /

verb (used with object)

defibrated, defibrating
  1. to break (wood, paper, garbage, etc.) into fibrous components; reduce to fibers.


Etymology

Origin of defibrate

de- + fibr- + -ate 1