a. The fact of being aware or informed of something; acquaintance with or apprehension of a thing or fact; cognizance, knowledge; †intimation, report (obsolete). In later use chiefly in there is no knowing: one cannot know, no one can tell.

†b. A means whereby it is possible to know something; a sign, an indication. Obsolete.

†a. The action of knowing or coming to know someone; personal knowledge or acquaintance. In early use also: those with whom a person is acquainted, (one's) acquaintance. Obsolete.

b. = knowledge n. 3c. Usually with preceding adjective, as carnal knowing, etc. Now rare.

a. That is in possession of knowledge; knowledgeable; well-informed, learned, practised, expert. Formerly also: †having intelligence or understanding (obsolete).

b. Having skill or competence in or (in later use esp.) knowledge about something. Now somewhat archaic.

†c. Of an action, etc.: that demonstrates or is evidence of knowledge or skill. Obsolete.

a. Of an action: done with full awareness or consciousness; deliberate. Of a person: aware of what he or she is doing, or of a fact, state of affairs, etc.; cognizant, conscious, informed, wilful. Cf. knowingly adv. 2.

b. With †of, to. Aware, cognizant. Now rare (U.S. regional in later use).

a. Originally: (of a person) having or showing discernment, insight, cunning, etc.; shrewd, crafty, canny, worldly-wise. Later also: (of a look, gesture, etc.) indicative of such insight; showing or (esp. covertly) suggesting the possession of secret or exclusive knowledge or understanding.Frequently with reference to knowledge or understanding which is shared with the person to whom the look, etc., is directed, but is not referred to explicitly.

b. colloquial. Showing awareness of what is fashionable, esp. in matters of dress; stylish, smart, chic. Now rare or merged in sense 4a.