a private residential institution equipped to care for persons unable to look after themselves, as the aged or chronically ill.

Chiefly British . a small private hospital; a small hospital owned by one person or a group of individuals and supported solely by the fees of patients.

noun

assisted living facility , convalescent home , convalescent hospital , nursing home , old folks home , old folks\' home , old people’s home , old soldiers\' home , rest home , retirement facility , retirement home