mail-n; 6 Senses

Sense Number 1: the general cargo of the postal service

Commentary: MAIL[+collection][+artifact][+letter_and_package][+general][+cargo][+postal_service]

Mail was loaded into the cargo hold of the aircraft.
It's a postal center for sorting mail to different parts of the country.
The postal strike resulted in an interruption in the delivery of mail.
The check is in the mail. (among the general flow of letters and packages)

WordNet 3.0 Sense Numbers: 1

Sense Number 2: the postal service as an enterprise

Commentary: MAIL[+enterprise][+service][+postal]

You can order the book by mail. (through that provided service)
Mail workers went on strike today.
The mail handles billions of items every day.

WordNet 3.0 Sense Numbers: 2

Sense Number 3: a delivered set of letters and packages to a destination

Commentary: MAIL[+collection][+artifact][+letter_and_package][+specific][+delivered][+to_destination]

Her letter arrived in today's mail.
Mary leaves her unopened mail in a basket in the front hall.
Did the mail come yet?

WordNet 3.0 Sense Numbers: 4

Sense Number 4: digital messages sent electronically

Commentary: MAIL[+collection][+artifact][+electronic][+message][+digital]

John sat down at his computer to read his mail.
So much of my mail these days is spam!
During the break, Mary checked her cell phone for mail.

WordNet 0.0 Sense Numbers: 1c

Sense Number 5: vehicle or conveyance that transports letters and packages

Commentary: MAIL[+artifact][+conveyance][+vehicle][+transport][+of_letters_and_packages]
NOTE: dated usage

The packages moved slowly by mail train.
The mail convoy over the desert was accosted by robbers.

WordNet 3.0 Sense Numbers: 3

Sense Number 6: chain armor worn by knights

Commentary: MAIL[+artifact][+garment][+armor][+rings][+of_metal]

The page helped the knight into his mail armor.
Arrows shot from a longbow could pierce the mail of the knights.

WordNet 3.0 Sense Numbers: 5