I grill aunt about knowing a crowd of languages (10)

I believe the answer is:

trilingual

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'knowing a crowd of languages' is the definition.
I can't judge whether this definition defines the answer.

'i grill aunt about' is the wordplay.
'about' indicates an anagram.
'i'+'grill'+'aunt'='igrillaunt'
'igrillaunt' with letters rearranged gives 'TRILINGUAL'.

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

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