Brewers combining pride within pride? (4,3)

I believe the answer is:

lion cub

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'pride?' is the definition.
Although both the answer and definition are singular nouns, I cannot see how they can define each other.

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for lion cub that I've seen before include "beastly prince?" , "Young mauler" , "Young pride member" , "Creature" , "Elsa's offspring possibly (Born Free)" .)

I've seen this clue in the Sydney Morning Herald.

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