n. A frame consisting of two bars crossing each other at right angles and turning on a post or pin, to hinder the passage of beasts, but admitting a person to pass between the arms; a turnstile. See turnstile, 1.n. A gate or bar set across a road to stop carriages, animals, and sometimes people, till toll is paid for keeping the road in repair; a tollgate.n. A turnpike road.n. A winding stairway.n. A beam filled with spikes to obstruct passage; a cheval-de-frise.v. To form, as a road, in the manner of a turnpike road; to throw into a rounded form, as the path of a road.