Know

1. n. Knee.
2. v. i. To perceive or apprehend clearly and certainly; to understand; to have full information of; as, to know one’s duty.
3. v. i. To be convinced of the truth of; to be fully assured of; as, to know things from information.
4. v. i. 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.
5. v. i. To recognize; to distinguish; to discern the character of; as, to know a person’s face or figure.
6. v. i. To have sexual commerce with.
7. v. i. To have knowledge; to have a clear and certain perception; to possess wisdom, instruction, or information; — often with of.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.