Meaning

1. to know (to have knowledge of)
2. to know (to have contact with a person)
3. to know (having learned, to be able to apply, e.g. a language)
4. to know somebody/something (to know that something exists)
5. (obsolete) to consider as, to take for
6. (obsolete) to realize (to become aware of)
7. (obsolete) to know (to have knowledge of)
8. to know each other, to know one another (to have knowledge of one another)
9. to know one's way around something (to know something very well)
10. to know one's way around someone (to be able to intuit someone's thoughts and intentions well)
11. (obsolete) to consider oneself as, to take oneself for
12. (obsolete) to have sex
13. (obsolete) to consider as one's own