Noun warrant has 4 senses
  1. warrant - a writ from a court commanding police to perform specified acts
    --1 is a kind of
    writ, judicial writ
    --1 has particulars:
     search warrant; bench warrant, arrest warrant; death warrant; cachet, lettre de cachet; reprieve; commutation; pardon, amnesty
  2. warrant, stock warrant, stock-purchase warrant - 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 securities"
    --2 is a kind of security, surety
    --2 has particulars: perpetual warrant; subscription warrant
  3. sanction, countenance, endorsement, indorsement, warrant, imprimatur - formal and explicit approval; "a Democrat usually gets the union's endorsement"
    --3 is a kind of approval, commendation
    --3 has particulars:
     O.K., OK, okay, okey, okeh; visa; nihil obstat
  4. guarantee, warrant, warrantee, warranty - a written assurance that some product or service will be provided or will meet certain specifications
    --4 is a kind of assurance, pledge
    --4 has particulars: security, surety; deposit; stock warrant
    Derived form: verb warrant2
,Verb warrant has 2 senses
  1. justify, warrant - show to be reasonable or provide adequate ground for; "The emergency does not warrant all of us buying guns"; "The end justifies the means"
    --1 is one way to confirm, reassert
    Sample sentence:
    Something ----s something
  2. guarantee, warrant - stand behind and guarantee the quality, accuracy, or condition of; "The dealer warrants all the cars he sells"; "I warrant this information"
    --2 is one way to back, endorse, indorse, plump for, plunk for, support
    Derived forms: noun warrant4, noun warrantee2, noun warrantor1, noun warranter1
    Sample sentence:
    Somebody ----s something