An enclosure made of bars, normally to hold animals.
The most dangerous prisoners are locked away in a cage.
The passenger compartment of a lift.
(water polo) The goal.
An automobile.
Something that hinders freedom.
The area from which competitors throw a discus or hammer.
An outer framework of timber, enclosing something within it.
A skeleton frame to limit the motion of a loose piece, such as a ball valve.
A wirework strainer, used in connection with pumps and pipes.
The drum on which the rope is wound in a hoisting whim.
The catcher's wire mask.
A regular graph that has as few vertices as possible for its girth.