An Encylopedia Britannica Company

mail

1 mail /ˈmeɪl/ noun
1 mail
/ˈmeɪl/
noun
Britannica Dictionary definition of MAIL
[noncount]
Mail is used in British English but it is much more common in U.S. English. The usual word in British English is post.
: the system used for sending letters and packages from one person to another
called also (chiefly British) post
see also airmail, direct mail, registered mail, return mail, surface mail, voice mail
: letters or packages sent from one person to another
called also (chiefly British) post
see also fan mail, junk mail, snail mail
: 1e-mail

the mails

chiefly US, law, formal
: the system used for sending letters, packages, etc. : a nation's postal system
compare 3mail
2 mail /ˈmeɪl/ verb
mails; mailed; mailing
2 mail
/ˈmeɪl/
verb
mails; mailed; mailing
Britannica Dictionary definition of MAIL
[+ object] chiefly US
: to send (something, such as a letter or package) by mail
3 mail /ˈmeɪl/ noun
3 mail
/ˈmeɪl/
noun
Britannica Dictionary definition of MAIL
[noncount]
: a kind of protective clothing (called armor) that is made of many small pieces or rings of metal which are linked together see also chain mail
compare 1mail