1. One who keeps the keys of a prison; an old-fashioned dentist's instrument.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• turcky,
• turnet,
• funkey,
• tunkey,
• trunkey,
• turjey,
• turykey,
• dunkey,
• tureky,
• turny,
• turky,
• turckey,
• terkey,
• turnner,
• trukey,
• torney,
• turnne,
• turke,
• turkay,
• twinkey

• turnage,
• turncock.

The adjective form of "turnkey" is "turnkey" itself.

The plural of the "turnkey" can be the "turnkeys".

The singular of the "turnkey" can be the "turnkey".