n. In old law, the act of the distraiuer of goods, who, in an action of replevin, avowed and justified the taking by maintaining that he took them in his own right: thus distinguished from cognizance, which was the defense of one who maintained that he took them in the right of another as his bailiff or servant.n. A patron saint chosen for one's advocacy in heaven: often applied to a picture or representation of the patron saint, and hence the cognizance by which a knight was known, because the representation of his patron saint borne on his pennon became such a cognizance.