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turnstile

[ turn-stahyl ]
/ ˈtɜrnˌstaɪl /
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noun
a structure of four horizontally revolving arms pivoted atop a post and set in a gateway or opening in a fence to allow the controlled passage of people.
a similar device set up in an entrance to bar passage until a charge is paid, to record the number of persons passing through, etc.
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Origin of turnstile

First recorded in 1635–45; turn + stile1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

How to use turnstile in a sentence

British Dictionary definitions for turnstile

turnstile
/ (ˈtɜːnˌstaɪl) /

noun
a mechanical gate or barrier with metal arms that are turned to admit one person at a time, usually in one direction only
any similar device that admits foot passengers but no large animals or vehicles
Also called: gatepost logic a symbol of the form ̃⊢, ⊨, or ⊩, used to represent logical consequence when inserted between expressions to form a sequent, or when prefixed to a single expression to indicate its status as a theorem
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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