Meaning

1. (transitive with de or with no preposition (more common)) to treat (to handle, deal with or behave towards in a specific way)
2. (transitive with de or with no preposition (more common)) to treat (to apply medical care to a person)
3. (transitive with de or with no preposition (more common)) to treat (to apply medical care in order to eliminate a condition)
4. to treat (to subject to a chemical or other action)
5. to treat; to negotiate with
6. to address someone with a specific form of address
7. to behave (to conduct oneself in a given way)
8. (transitive with de or with no preposition (more common)) to take care of; to care for (to attend to the needs of)
9. to be about; to have as its subject
10. to talk about; to discuss
11. to do something promptly; usually used to emphasise orders
12. (Brazil) to feed (to give someone, especially an animal, food to eat)