What does the word alarm mean?

Usage examples for alarm

  1. The road agent started in alarm. – The Girl of the Golden West by David Belasco
  2. He's nowhere, Reverend Brother, and shall I go and ring the fire- alarm?" – The Altar Steps by Compton MacKenzie
  3. " Do not alarm yourself, Michel," answered Nicholl. – The Moon-Voyage by Jules Verne