lettre

/lɛtʁ/
1.
nounfeminineSing

letter (of the alphabet)

character

Ça se termine par quelle lettre ?

What letter does it end with?

Synonyms:caractère, graphème, signe
2.
nounfeminineSing

letter (mail, written message)

J'ai reçu une lettre recommandée ce matin.

I received a registered letter this morning.

Synonyms:courrier, pli, missive