1. (n.)mail letters, packages, etc., sent or delivered by the postal service.
2. mail a single collection or delivery of such postal matter.
3. mail Also, mails. the system, usu. operated by the government, for sending or delivering such postal matter.
4. mail a conveyance used as a carrier of mail.
5. mail e-mail.
6. (adj.)mail of or pertaining to mail.
7. (v.t.)mail to send by mail.
8. (n.)mail flexible armor of metalrings or plates.
9. mail any protective armor, as the shell of certain animals.
10. (v.t.)mail to clothe or arm with mail.
Etymology: (1250–1300; ME maille one of the rings of which such armor was composed)
Definition of 'Mail'
Princeton's WordNet
1. (noun)mail the bags of letters and packages that are transported by the postal service
2. (noun)mail, mail service, postal service, post the system whereby messages are transmitted via the post office "the mail handles billions of items every day"; "he works for the United States mail service"; "in England they call mail `the post'"
3. (noun)mail a conveyance that transports the letters and packages that are conveyed by the postal system
4. (noun)mail, post any particular collection of letters or packages that is delivered "your mail is on the table"; "is there any post for me?"; "she was opening her post"
5. (verb)chain mail, ring mail, mail, chain armor, chain armour, ring armor, ring armour (Middle Ages) flexible armor made of interlinked metal rings
6. (verb)mail, get off send via the postal service "I'll mail you the check tomorrow"
7. (verb)mail, post, send cause to be directed or transmitted to another place "send me your latest results"; "I'll mail you the paper when it's written"