(UPPER FLOOR) [noun] [U] - an upper floor in a theatre or cinema where people sit to watch the performanceShall I get seats in the circle or in the stalls?Dress/Front circle seats/tickets are quite expensive - the upper circle is cheaper.Compare gallery (RAISED AREA); stalls (THEATRE).
CIRCLE
Meaning of CIRCLE in English
Cambridge English vocab. Кембриджский английский словарь. 2012