Habeas corpus

A writ having for its object to bring a party before a court or judge; especially, one to inquire into the cause of a person's imprisonment or detention by another, with the view to protect the right to personal liberty; also, one to bring a prisoner into court to testify in a pending trial.

A writ requiring a person under arrest to be brought before a judge.

the civil right to obtain a writ of habeas corpus as protection against illegal imprisonment

a writ ordering a prisoner to be brought before a judge