turnkey Meaning, Definition & Usage

  1. noun someone who guards prisoners
    screw; jailor; jailer; prison guard; gaoler.

WordNet

Turn"key` noun
Wordforms
plural Turnkeys
Definitions
  1. A person who has charge of the keys of a prison, for opening and fastening the doors; a warder.
  2. (Dentistry) An instrument with a hinged claw, -- used for extracting teeth with a twist.

Webster 1913