Crossword Genius

It’s essential to share national sporting venue (5)

Ross

I believe the answer is:

arena

'sporting venue' is the definition.
(sports arena)

'it's essential to share national' is the wordplay.
'it's essential to' indicates a hidden word (I've seen this in other clues).
'ARENA' can be found hidden inside 'share national'.

(Other definitions for arena that I've seen before include "park" , "Where one may find sportsmen" , "Coliseum" , "place for sporting contest" , "Scene of combat" .)

I've seen this clue in The Times.
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