turnstile

n revolving gate that allows one person at a time to enter or leave a stadium or sports ground （体育馆、 场中只容一人进或出的）旋转栅门.

turn sth inside out, turn to, turn up, turn-about, turn-around (also turn-round), turn-off, turn-on, turn-out, turn-round, turn-up, turn...upside down, turncoat, turner, turning, turning-circle, turning-point, turnip, turnkey, turnover, turnpike, turntable, turpentine, turpitude, turquoise, turret, turreted, turtle, turtle-dove, turtle-neck, turtle-necked, turves, tusk, tussle, tussock, tut, tut (also tut-tut), tutelage, tutelary, tutor, tutorial,