Boadicea's game? (4)

I believe the answer is:

dice

I'm a little stuck... Click here to teach me more about this clue!

'game?' is the definition.

'boadicea's' is the wordplay.
'DICE' is hidden in amongst the letters.
However, I am uncertain how the hidden word is indicated.

Can you help me to learn more?

(Other definitions for dice that I've seen before include "Cut into small cubes" , "Gambling pieces" , "Take a risk" , "Gambling items" , "Small cube" .)

I've seen this clue in the Evening Standard.

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