Turn·pike n.
1. 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.
I move upon my axle like a turnpike. --B. Jonson.
2. 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.
3. A turnpike road.
4. A winding stairway. [Scot.]
5. Mil. A beam filled with spikes to obstruct passage; a cheval-de-frise. [R.]
Turnpike man, a man who collects tolls at a turnpike.
Turnpike road, a road on which turnpikes, or tollgates, are established by law, in order to collect from the users tolls to defray the cost of building, repairing, etc.