Meaning

1. to understand (to grasp a concept fully in one's mind)
2. to understand (to assign a particular meaning to something)
3. to understand (to empathize with someone or something)
4. used to emphasize a message; understand
5. used to grab the listeners attention; see
6. used when the speaker feels their previous statement was strange; see
7. to realize (to begin to understand)
8. to understand each other
9. to be understood