An order that serves as authorization, especially, A voucher authorizing payment or receipt of money, A certificate of appointment given to a warrant officer, transitive verb_ To secure to, as a purchaser of goods, the title to the same; to indemnify against loss, To assure, as a thing sold, to the purchaser; that is, to engage that the thing is what it appears, or is represented, to be, which implies a covenant to make good any defect or loss incurred by it, To provide adequate grounds for; justify or require