noun
letter
LET-er/ˈletər/
A written message sent to someone.
The folded letter lies beside its envelope and a fountain pen.

Etymology
Latin littera meant an alphabetic character, but its plural litterae also meant a written message. That collective use connects individual written characters with a complete communication sent to another person.
In context
so he says I wrote to you in my letter not to associate with sexually immoral people
More examples
- I wrote a letter to thank the volunteers.
- Several letters arrived while we were away.
- He saved every letter his grandfather sent.
Forms
letter · letters
Similar words
- note
- Usually a shorter or less formal written message.
- correspondence
- Written communication collectively rather than one message.