Wordnet 3.0
NOUN (1)
1. 
 the law enforcement agency of the Justice Department that operates a nationwide system of prisons and detention facilities to incarcerate inmates sentenced to imprisonment for federal crimes; 
[syn: Federal Bureau of Prisons, BoP]
WordNet (r) 3.0 (2006):
Federal Bureau of Prisons
    n 1: the law enforcement agency of the Justice Department that
         operates a nationwide system of prisons and detention
         facilities to incarcerate inmates sentenced to imprisonment
         for federal crimes [syn: Federal Bureau of Prisons,
         BoP]