warrant

An order that serves as authorization, especially.

A judicial writ authorizing the search or seizure of property, arrest of a person, or the execution of a legal judgment.

A voucher authorizing payment or receipt of money.

An option to buy stock at a specified price from an issuing company.

Justification for an action or a belief; grounds.

Something that provides assurance or confirmation; a guarantee or proof.

Authorization or certification; sanction, as given by a superior.

A warrant officer.