Knowl·edge (nŏl'ĭj) n.

1. The act or state of knowing; clear perception of fact, truth, or duty; certain apprehension; familiar cognizance; cognition.

2. That which is or may be known; the object of an act of knowing; a cognition; -- chiefly used in the plural.

3. That which is gained and preserved by knowing; instruction; acquaintance; enlightenment; learning; scholarship; erudition.

4. That familiarity which is gained by actual experience; practical skill; as, a knowledge of life.

5. Scope of information; cognizance; notice; as, it has not come to my knowledge.

6. Sexual intercourse; -- usually preceded by carnal.

7. the psychological result of perception and learning and reasoning.