Definition of: cage

(kāj) noun
1. A structure, with openwork of wire or bars, as for confining birds or beasts.
2. A room or place enclosed by a grating, for confining prisoners.
3. Any lockup, prison, or place of confinement, or anything that confines or imprisons.
4. Any cagelike structure, framework, or grating, as a timber framework lining a shaft.
5. A platform, elevator car, or the like, protected by gratings.
6. A wire mask worn by the catcher in baseball.
7. The iron or steel skeleton frame of a high building.
8. A table from which quick-firing guns are discharged.
9. An enclosure in a gymnasium for interior baseball practice.
—v.t. caged, cag·ing To shut up in or as in a cage; confine; imprison. [<OF <L cavea <cavus empty, hollow]