Εννοια

• Noun

  1. A high-pitched, short and somewhat sharp sound.
  2. A pulse of high-pitched or ultrasonic sound whose echoes provide information about nearby objects and vessels.
  3. A packet which a remote host is expected to echo, thus indicating its presence.
  4. An email or other message sent requesting acknowledgement.
  5. Latency.
  6. A means of highlighting a feature on the game map so that allied players can see it.
  7. A notification.

• Verb