the act or state of knowing; clear perception of fact, truth, or duty; certain apprehension; familiar cognizance; cognition.-that which is or may be known; the object of an act of knowing; a cognition; -- chiefly used in the plural.-that which is gained and preserved by knowing; instruction; acquaintance; enlightenment; learning; scholarship; erudition.-that familiarity which is gained by actual experience; practical skill; as, a knowledge of life.-scope of information; cognizance; notice; as, it has not come to my knowledge.-sexual intercourse; -- usually preceded by carnal; as, carnal knowledge.-to acknowledge.