meaning of turnpike
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.
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.
5. A beam filled with spikes to obstruct passage; a cheval-de-frise.
6. To form, as a road, in the manner of a turnpike road; into a rounded form, as the path of a road.
7. an expressway on which tolls are collected