Meaning

noun a writ from a court commanding police to perform specified acts

noun a type of security issued by a corporation (usually together with a bond or preferred stock) that gives the holder the right to purchase a certain amount of common stock at a stated price

noun formal and explicit approval

originThe noun is derived from Middle English warant (“protector; guard, shield, protection”), from Anglo-Norman warrant, Old Northern French warant, warand, a variant of Old French guarant, garant, garand (“assurance, guarantee; authorization, permission; protector; protection, safety”) (modern French garant), from Frankish *warand, present participle of *warjan (“to fend off; to stop, thwart”). The…

Etymology from Wiktionary, CC BY-SA 3.0