1 for sports/entertainment
ADJ. Olympic | showjumping, sports | indoor
VERB + ARENA enter | leave He left the arena to loud applause.
PREP. in/into an/the ~ The rider has to halt the horse in the arena.
2 area of activity
ADJ. international, world | wider Trades unions are active both in individual workplaces and in the wider arena of the state. | public | commercial, political | competitive
VERB + ARENA provide The conference should provide an arena for marketing our new products. | emerge into, enter, move into Some documents have now emerged into the public arena. He had no desire to enter the political arena.
PREP. in/within an/the ~ The company has been very successful in the commercial arena. | outside an/the ~ I want to work outside the arena of competition.