message you put in an envelope and send by post

Alternative form of Lettrism

plural of letter

Literature (school subject). / The liberal arts, humanities, learning (broad accumulated cultural knowledge).

Third-person singular simple present indicative form of letter

present participle of letter

Written text, especially when printed.

plural of lettering

(art) The use of letters and other text characters to form a picture.

An item of mail that cannot be delivered to its intended recipient; after some time it is returned to the sender, or destroyed. / A law or other measure that is no longer enforced.