What does the word detective mean?

Usage examples for detective

  1. You are not making any sort of detective investigation? – Murder in the Gunroom by Henry Beam Piper
  2. However if it must be- For the first time in my life I walked side by side with a detective. – An Amiable Charlatan by E. Phillips Oppenheim
  3. I was watching that fellow, the detective Falfani, when his lordship came upon the scene. – The Passenger from Calais by Arthur Griffiths