Know

Knee.

To perceive or apprehend clearly and certainly; to understand; to have full information of; as, to know one's duty.

To be convinced of the truth of; to be fully assured of; as, to know things from information.

To be acquainted with; to be no stranger to; to be more or less familiar with the person, character, etc., of; to possess experience of; as, to know an author; to know the rules of an organization.

To recognize; to distinguish; to discern the character of; as, to know a person's face or figure.

To have sexual commerce with.

To have knowledge; to have a clear and certain perception; to possess wisdom, instruction, or information; -- often with of.

To be assured; to feel confident.

accept (someone) to be what is claimed or accept their power and authority; "The Crown Prince was acknowledged as the true heir to the throne"; "We do not recognize your gods"

the fact of being aware of information that is known to few people; "he is always in the know"