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

Noun
a written assurance that some product or service will be provided or will meet certain specifications

Noun
formal and explicit approval; "a Democrat usually gets the union''s endorsement"

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; "as a sweetener they offered warrants along with the fixed-income

Verb
stand behind and guarantee the quality, accuracy, or condition of; "The dealer warrants all the cars he sells"; "I warrant this information"

Verb
show to be reasonable or provide adequate ground for; "The emergency does not warrant all of us buying guns"; "The end justifies the means"

n.
That which warrants or authorizes; a commission giving authority, or justifying the doing of anything; an act, instrument, or obligation, by which one person authorizes another to do something which he has not otherwise a right to do; an act or instrument investing one with a right or authority, and thus securing him from loss or damage; commission; authority.

n.
A writing which authorizes a person to receive money or other thing.

n.
A precept issued by a magistrate authorizing an officer to make an arrest, a seizure, or a search, or do other acts incident to the administration of justice.

n.
An official certificate of appointment issued to an officer of lower rank than a commissioned officer. See Warrant officer, below.

n.
That which vouches or insures for anything; guaranty; security.

n.
That which attests or proves; a voucher.

n.
Right; legality; allowance.

n.
To make secure; to give assurance against harm; to guarantee safety to; to give authority or power to do, or forbear to do, anything by which the person authorized is secured, or saved harmless, from any loss or damage by his action.

n.
To support by authority or proof; to justify; to maintain; to sanction; as, reason warrants it.

n.
To give a warrant or warranty to; to assure as if by giving a warrant to.

n.
To secure to, as a grantee, an estate granted; to assure.

n.
To secure to, as a purchaser of goods, the title to the same; to indemnify against loss.

n.
To secure to, as a purchaser, the quality or quantity of the goods sold, as represented. See Warranty, n., 2.

n.
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.

Warrant