Visual meaning of 'turnstile'? - learn with images, example in daily life

Visual illustration 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. - Image 1

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. - Thumbnail 1

noun

A rotating mechanical device that controls and counts passage between public areas, especially one that only allows passage after a charge has been paid.

"To enter the school, students must use the turnstile and pay the entrance fee. "

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Visual illustration of turnstile: A similar device in a footpath to allow people through one at a time while preventing the passage of cattle. - Image 1

turnstile: A similar device in a footpath to allow people through one at a time while preventing the passage of cattle. - Thumbnail 1

noun

A similar device in a footpath to allow people through one at a time while preventing the passage of cattle.

"The farmer installed a turnstile at the entrance to the schoolyard to keep the cows from wandering onto the playground. "

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$Visual illustration of turnstile: The \vdash symbol used to represent logical entailment (deducibility relation), especially of the syntactic type; i.e., syntactic consequence. (Such symbol can be read as "prove(s)" or "give(s)". )$

noun

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)". )

"The teacher used a turnstile to show that if you study hard, you'll pass the test. "

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