2.
Rent; tribute. [Obs., except in certain compounds and phrases, as blackmail, mails and duties, etc.]
[1913 Webster]

Mail and duties (Scots Law), the rents of an estate, in whatever form paid.
[1913 Webster]

Chain mail, Coat of mail. See under Chain, and Coat.
[1913 Webster]

2.
Hence generally, armor, or any defensive covering.
[1913 Webster]

3. (Naut.)
A contrivance of interlinked rings, for rubbing off the loose hemp on lines and white cordage.
[1913 Webster]

4. (Zol.)
Any hard protective covering of an animal, as the scales and plates of reptiles, shell of a lobster, etc.
[1913 Webster]

-We . . . strip the lobster of his scarlet mail. Gay.
[1913 Webster]

2.
To pinion. [Obs.]
[1913 Webster]

2.
The bag or bags with the letters, papers, or other matter contained therein, conveyed under public authority from one post office to another; the whole system of appliances used by government in the conveyance and delivery of mail matter.
[1913 Webster]

-There is a mail come in to-day, with letters dated Hague. Tatler.
[1913 Webster]

3.
That which comes in the mail; letters, etc., received through the post office.
[1913 Webster]

4.
A trunk, box, or bag, in which clothing, etc., may be carried. [Obs.] Sir W. Scott.
[1913 Webster]

Mail catcher, an iron rod, or other contrivance, attached to a railroad car for catching a mail bag while the train is in motion. -- Mail guard, an officer whose duty it is to guard the public mails. [Eng.] -- Mail train, a railroad train carrying the mail.
[1913 Webster]