Where cricket is played with much exceptional valour (4)

I believe the answer is:

oval

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'where cricket is played with much exceptional valour' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how they can define each other.

This is the entire clue.

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(Other definitions for oval that I've seen before include "34 [CRICKETER] 's domain" , "Elliptical figure" , "London cricket ground" , "Egg shape - Kennington test match venue" , "Elliptical - cricket ground" .)

I've seen this clue in the Evening Standard.

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