Learner's definition of HOSPITAL
a place where sick or injured people are given care or treatment and where children are often born
(US) She's in the hospital. = (Brit) She's in hospital.
(US) She was admitted to the hospital yesterday. = (Brit) She was admitted to hospital yesterday. [=she was hospitalized yesterday]
(US) She'll be discharged from the hospital tomorrow. = (Brit) She'll be discharged from hospital tomorrow.
— often used before another noun
a hospital gown