noun, plural mad·hous·es [mad-hou-ziz] /ˈmædˌhaʊ zɪz/.
- a hospital for the confinement and treatment of mentally disturbed persons.
- a wild, confused, and often noisy place, set of circumstances, etc.: The office was a madhouse today.
- a mental hospital or asylum
- a state of uproar or confusion
n.1680s, from mad + house (n.). Figurative use by 1919.