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turnkey

[ turn-kee ]
/ ˈtɜrnˌki /
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noun, plural turn·keys.

a person who has charge of the keys of a prison; jailer.

adjective

Also turn-key . of, relating to, or resulting from an arrangement under which a private contractor designs and constructs a project, building, etc., for sale when completely ready for occupancy or operation: turn-key housing, turnkey contract.
fully equipped; ready to go into operation: a turnkey business.

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Origin of turnkey

First recorded in 1645–55; turn + key1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for turnkey

turnkey
/ (ˈtɜːnˌkiː) /

noun

archaic a keeper of the keys, esp in a prison; warder or jailer

adjective

denoting a project, as in civil engineering, in which a single contractor has responsibility for the complete job from the start to the time of installation or occupancy
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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