1. To write or to print on an item of mail the details of where it is to be delivered by the postal service: People need to make sure that they are addressing their mail correctly if they want it to be delivered.
2. To deliver a formal spoken communication to an audience, such as a formal speech or report: Corinne addressed her fellow students during the assembly.
3. To use the proper name or title of a person when speaking or writing to him or her: Irene always addressed her professor as Dr. Kindle."