telegram

Short definition from Wiktionary

Noun

1. 1
   A message transmitted by telegraph.
2. 2
   A Telegram channel.

Verb

1. 1
   To send a telegram.
2. 2
   To send a telegram to (a person).
3. 3
   To send (a message) in a telegram.
4. 4
   To send a message using the Telegram instant messaging service.

Proper noun

1. 1
   An encrypted, cloud-based instant messaging service.