Habeus Corpus is a Latin phrase meaning 'you have the body' and is a fundamental legal principle in the United States. It is a right that protects individuals from unlawful imprisonment and requires that they be brought before a court of law to determine if they are being held lawfully. The term is also used to refer to the WRIT of habeas corpus, which is a legal document that orders a person to be brought before a court. The WRIT of habeas corpus is an important tool for protecting individual rights and ensuring that people are not unlawfully detained.