Define infirmary. infirmary synonyms, infirmary pronunciation, infirmary translation, English dictionary definition of infirmary. n. pl. in·fir·ma·ries A place for the care of the infirm, sick, or injured, especially a small hospital or dispensary in
Infirmary definition: a place for the care of the infirm, sick, or injured; hospital or facility serving as a hospital. See examples of INFIRMARY used in a sentence.