1. ready for immediate use or occupancy; complete and fully operational

1. a jailer or prison keeper
Usage: archaic

Examples

• The company offers turnkey solutions for small businesses.
• They purchased a turnkey home that was move-in ready.
• The turnkey operation included all equipment and training.
• We need a turnkey system that requires no additional setup.
• The turnkey locked the cell door behind the prisoner.
• In medieval times, the turnkey held the keys to the dungeon.