turnstile /ˈtɚnˌstajəl/ noun plural turnstiles
plural turnstiles
Learner's definition of TURNSTILE
[count]
: a gate at an entrance that has arms which turn around and that allows only one person at a time to pass through旋转栅门(设于入口处,附有若干旋转臂,每转一次可容一人通过)