Authorization or certification; sanction, as given by a superior. (noun)
Something that provides assurance or confirmation; a guarantee or proof: a warrant of authenticity; a warrant for success. (noun)
An order that serves as authorization, especially: A voucher authorizing payment or receipt of money. (noun)
A judicial writ authorizing an officer to make a search, seizure, or arrest or to execute a judgment. (noun)
A warrant officer. (noun)
A certificate of appointment given to a warrant officer. (noun)
An option, usually with a term at issue greater than a year, usually issued together with another security, to buy other securities of the issuer. (noun)
A Warrant of Fitness; a document certifying that a motor vehicle meets certain standards of safety and mechanical soundness. (noun)
To protect, keep safe (from danger). (verb)
To guarantee (something) to be (of a specified quality, value etc.). (verb)
To guarantee as being true; (colloquially) to believe strongly. (verb)
To give (someone) a guarantee or assurance (of something); also, with double object, to guarantee (someone something). (verb)
To authorize; to give (someone) warrant or sanction (to do something). (verb)
To justify; to give grounds for. (verb)
Examples of word warrant
 In the first of those books I introduced the term warrant 'as a name for that property -- or better, quantity -- enough of which is what makes the difference between knowledge and mere true belief.
Suppose we use the term warrant 'to denote that further quality or quantity (perhaps it comes in degrees), whatever precisely it may be, enough of which distinguishes knowledge from mere true belief.
So you believe that, if a legitimate search warrant is served at a particular time and people-other-than-those named on the warrant are there, that these folks should beâ€ ¦ what?
So you believe that, if a legitimate search warrant is served at a particular time and people-other-than-those named on the warrant are there, that these folks should be … what?
'They have what they call a warrant to search for you.'