Wiktionary
battery cages
n. (battery cage English)
Usage examples of "battery cages".
It's the white of hard-boiled eggs, crippled chickens in battery cages, factory farm misery and suffering and death.
Inmates grew hysterical in their cells and turned on their cellmates, tearing at them viciously, like creatures that had been penned together too long in battery cages, and had never forgotten or forgiven.