Meaning

• A bag or wallet.

• A bag containing letters to be delivered by post.

• The material conveyed by the postal service.

  "Don't forget to pick up the mail on your way."

• A stagecoach, train or ship that delivers such post.

• The postal service or system in general.

  "He decided to send his declaration by mail."

• The letters, parcels, etc. delivered to a particular address or person.

• Electronic mail, e-mail: a computer network–based service for sending, storing, and forwarding electronic messages.

• A trunk, box, or bag, in which clothing, etc., may be carried.

Meaning

• (ditransitive) To send (a letter, parcel, etc.) through the mail.

• (ditransitive) To send by electronic mail.

  "Please mail me the spreadsheet by the end of the day."

• To contact (a person) by electronic mail.

  "I need to mail my tutor about the deadline."