noun knee.
2. know ·vi to have sexual commerce with.
3. know ·vi to be assured; to feel confident.
4. know ·vi to be convinced of the truth of; to be fully assured of; as, to know things from information.
5. know ·vi to have knowledge; to have a clear and certain perception; to possess wisdom, instruction, or information;
often with of.
6. know ·vi to perceive or apprehend clearly and certainly; to understand; to have full information of; as, to know one's duty.
7. know ·vi to recognize; to distinguish; to discern the character of; as, to know a person's face or figure.
8. know ·vi 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.