No one can stand being in such a stadium (3-6)

'no one can stand' is the definition.
I know nothing about this answer so I cannot tell whether it can be defined by this definition.

'being in such a stadium' is the wordplay.
I cannot really see how this works, but
'being' could be 'eater' (eater is a kind of being) and 'eater' is present in the answer.
'a' is within the answer.
This explanation may well be incorrect...