parole

If you're in prison, after serving a few years you might be let out on parole, a promise to be good and check in regularly.

Parole comes from the French for "word," and means "word of honor." You'll most frequently hear it in relation to prisoners, who promise to fulfill certain conditions in return for an early release from jail. When the officials are trying to decide whether a prisoner is ready for parole, they have a parole hearing. Parole can also mean "password." If you're part of an underground revolutionary group, you'll need a parole to help keep your meetings secret. Just say the word at the door, and they'll let you in.