turnstile(redirected from High Entry-Exit Turnstiles)
Also found in: Dictionary, Thesaurus.
Logic a symbol of the form ├, ÿE;, 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
A barrier that rotates about a vertical axis and usually is arranged to allow the passage of only one person at a time through an opening.
A barrier which rotates on an axis and usually is so arranged as to allow the passage of a person through an opening only in one direction, one person at a time.