1.  bop(n = noun.group) federal bureau of prisons - 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;
is a kind of law enforcement agency
is a part of department of justice, doj, justice, justice department

2.  bop(n = noun.communication) bebop - an early form of modern jazz (originating around 1940);
is a kind of jazz
Derived form verb bop₁

1.  bop(v = verb.motion) bebop - dance the bebop;
is one way to dance, trip the light fantastic, trip the light fantastic toe
Derived form noun bop₂
Sample sentences: Sam and Sue bop

2.  bop(v = verb.contact) bash, bonk, sock, whap, whop - hit hard;
is one way to hit
Sample sentences: Somebody ----s somebody

   an early form of modern jazz (originating around 1940). [WordNet 1.5]

bop, n. & v. colloq.
--n.
1 = BEBOP.
2 a a spell of dancing, esp. to pop music. b an organized social occasion for this.
--v.intr. (bopped, bopping) dance, esp. to pop music.

Derivative:
bopper n.

bop, v. & n. colloq.
--v.tr. (bopped, bopping) hit, punch lightly.
--n. a light blow or hit.

Etymology:
imit.