Définitions
1.NounA frame consisting of two bars crossing each other at right angles and turning on a post or pin, to hinder the passage of animals, but admitting a person to pass between the arms.
2.NounA gate or bar set across a road to stop carriages, animals, and sometimes people, until a toll is paid.
3.NounA winding stairway.
4.NounA beam filled with spikes to obstruct passage; a cheval de frise.
5.NounA toll road, especially a toll expressway. In some places the clipped version, pike, is used for roads without tolls.
6.NounA trajectory on a finite time interval that satisfies an optimality criterion which is associated with a cost function.
7.VerbTo form (a road, etc.) in the manner of a turnpike road, or into a rounded form, as the path of a road.