1. General: (1) Formal and explicit approval. (2) Document (instrument) that confers authority or justifies an act that is otherwise neither permissible nor legal. 
2. Law: Legal authorization (writ) issued by a court to (1) search a place and seize specified items if found there (called search warrant), or (2) arrest or detain specified person or persons (called arrest warrant). Although no ... Read more

USAGE EXAMPLE

If you fail to pay a traffic ticket or other citation you may find yourself visited by a police officer with a warrantfor your arrest.