What is the meaning of Lettre?

Obsolete form of letter.

letter (written character)

letter (written message)

the literal meaning, the plain meaning of something

sublative singular of lett

sublative singular of lett

letter (of the alphabet), character

letter (for communication)

report, request, or other formal instrument of communication

written text, especially that used as a resource

wording, literal reading

letter (written character)

letter (written message)

letter (written character, written message)

Source: wiktionary.org