turnkey
📖 Definitions
noun
One in charge of the keys in a prison; jailer.
adjective
Relating to a product or service that is supplied ready for immediate use.
💬 Usage Examples
“The turnkey closed and bolted the barred gate.” Bernard Cornwell; Gallows Thief; HarperCollins; 2001. “GE began to offer turnkey contracts to utilities, in which it delivered an entire nuclear plant for a fixed price.” Nucleardawn; The Economist (London, UK); Sep 8, 2007.