(HOSPITAL) UK and ANZ, US emergency room [noun] [U] - the part of a hospital where people who are hurt in accidents or suddenly become ill are taken for urgent treatmentShe had to be rushed to casualty.He had to wait for more than an hour in casualty before seeing a surgeon.
CASUALTY
Meaning of CASUALTY in English
Cambridge English vocab. Кембриджский английский словарь. 2012