plural of lettre / humanities/arts

classical studies (the study of Ancient Greek and Latin, their literature, history, etc.)

the study of French literature, history, etc.

homme de lettres, man of letters

mailbox, letterbox (box or slot into which a courier or postal worker puts letters for a recipient to collect) / mailbox, letterbox (box in which post can be left by a sender to be picked up by a courier or postman)

plural of boîte aux lettres

plural of lettre de motivation

plural of homme de lettres

plural of lettre de change

woman of letters, a literary woman