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

plural of turnstile

Fitted or equipped with turnstiles.

(event organization) A rough count of the number of attendees for multiple-day events, by counting the number of days of access each individual has been granted.

(logic, model theory) The ⊨ symbol used to denote semantic consequence, or the ⊨ symbol used to denote the fact that the model to the left of it satisfies the set of sentences to its right.

plural of double turnstile