1. to act or behave toward in some specified way: to treat someone with respect.
2. to consider or regard in a specified way: to treat a matter as unimportant.
3. to deal with in a specified way; handle.
4. to deal with (a disease, patient, etc.) in order to relieve or cure.
5. to subject to some agent or action in order to bring about a particular result: to treat a substance with an acid.
6. to provide with food, entertainment, gifts, etc., at one's own expense.
7. to provide with as a source of pleasure or enjoyment.
8. to deal with in speech or writing; discuss.
9. to deal with or represent artistically, esp. in some specified manner or style: to treat a theme realistically.