Definition of Turnstile

Babylon English Dictionary
apparatus consisting of rotating bars that regulate entry
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Turnstile Definition from Language, Idioms & Slang Dictionaries & Glossaries
Webster's Revised Unabridged Dictionary (1913)
(n.)
A similar arrangement for registering the number of persons passing through a gateway, doorway, or the like.
  
(n.)
A revolving frame in a footpath, preventing the passage of horses or cattle, but admitting that of persons; a turnpike. See Turnpike, n., 1.
  
Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter. About
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turnstile
\turn"stile`\ (?), n.
1. a revolving frame in a footpath, preventing the passage of horses or cattle, but admitting that of persons; a turnpike. see turnpike, n., 1.
2. a similar arrangement for registering the number of persons passing through a gateway, doorway, or the like.
turnstile
n : a gate consisting of a post that acts as a pivot for rotating arms; set in a passageway for controlling the persons entering

WordNet 2.0

Noun
1. a gate consisting of a post that acts as a pivot for rotating arms; set in a passageway for controlling the persons entering
(hypernym) gate
Turnstile Definition from Encyclopedia Dictionaries & Glossaries
Wikipedia English - The Free Encyclopedia
A turnstile, also called a baffle gate, is a form of gate which allows one person to pass at a time. It can also be made so as to enforce one-way traffic of people, and in addition, it can restrict passage only to people who insert a coin, a ticket, a pass, or similar. Thus a turnstile can be used in the case of paid access (sometimes called a faregate when used for this purpose), for example public transport as a ticket barrier or a pay toilet, or to restrict access to authorized people, for example in the lobby of an office building.

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Hawthorn is the location of a number of defence related underground facilities in the vicinity of Corsham, Wiltshire. Specifically the Hawthorn site was the location of an above-ground bunker used for the planning of satellite communications support to the United Kingdom's armed forces worldwide. These facilities had been built in quarries cleared through the excavation of Bath stone. The quarries have variously been used for Military Command & Control, storage, and the emergency fallback seat of the national government. Some areas of the quarry complex were hardened and provided with support measures to ensure resilience in the event of an enemy nuclear attack.

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