What does the word detection mean?

Usage examples for detection

  1. My left hand I had to hold, tied up in my handkerchief to stop the bleeding, in the pocket of my jacket: but I thought this the best way, all the same, to escape detection. – Recalled to Life by Grant Allen
  2. Still I reckoned that by keeping close under the wall and in the shadow I could escape detection from the windows of the chateau that looked out on the scene of my efforts. – The Prisoner of Zenda by Anthony Hope
  3. Below, the lights in the watch tower at the outer gate were plainly visible, and the twinkling of them reminded Barney of the danger of detection from that quarter. – The Mad King by Edgar Rice Burroughs