arena

/əˈriːnə/ noun [C]

Definition

› a flat area with seats around where you can watch sports and other entertainments: an Olympic/sports arena

in the political/public, etc arena › involved in politics/the government, etc: He thought he could do more good in the political arena.

(Definition of arena noun from the Cambridge Learner's Dictionary © Cambridge University Press)

to get rid of something or someone that is not wanted or needed

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