Parole

Any form of release of an offender from imprisonment to the community by a releasing authority prior to the expiration of his sentence, subject to conditions imposed by the releasing authority and to its supervision, including a term of supervised release. 18 USC Congress has abolished parole for people convicted of federal crimes, but most states still offer parole.

An early release from incarceration in which the prisoner promises to heed certain conditions (usually set by a parole board) and under the supervision of a parole officer. - (read more on Parole)
  

In criminal law, a conditional release from imprisonment that entitlesthe person receiving it to serve the remainder of his term outside prison if hecomplies with all the conditions connected with his release.