D defs.my
Entry 2 senses Webster, 1913

Warranter

· War·rant·er · IPA
01 n. One who warrants, gives authority, or legally empowers.
  1. 1.
    One who warrants, gives authority, or legally empowers.
  2. 2.
    One who assures, or covenants to assure; one who contracts to secure another in a right, or to make good any defect of title or quality; one who gives a warranty; a guarantor; as, the warranter of a horse.(Law)