infirmary
n. countablen. a place where people who are sick or hurt can get medical help. You usually find this inside a larger building like a school, a prison, or a military base.
n. a designated area or building used for the medical treatment of the sick or injured, typically within a larger institution. Often implies a smaller or more localized facility than a general hospital.
The student went to the school infirmary because she had a fever.
After the accident on the training grounds, the soldiers were immediately taken to the base infirmary for evaluation.
While the main hospital was miles away, the factory maintained a small infirmary to provide immediate first aid and stabilize workers before transport.
Often used with the definite article 'the' when referring to the specific medical office of an institution.