A turnstile, also called a baffle gate or turnstyle, 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 or ticket barrier when used for this purpose), for example to access public transport, a pay toilet, or to restrict access to authorized people, for example in the lobby of an office building.
misspelling of turnstile
A rotating mechanical device that controls and counts passage between public areas, especially one that only allows passage after a charge has been paid.
A similar device in a footpath to allow people through one at a time while preventing the passage of cattle.
The vdash symbol used to represent logical entailment (deducibility relation), especially of the syntactic type; i.e., syntactic consequence. (Such symbol can be read as “prove(s)” or “give(s)”. )
a mechanical gate consisting of revolving horizontal arms fixed to a vertical post, allowing only one person at a time to pass through.