Snaffle urgently required for holding girl (5)

I believe the answer is:

fleur

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

'girl' is the definition.

'snaffle urgently required for' is the wordplay.
'FLEUR' is hidden within the letters.
But, I am uncertain how the hidden word is indicated.

'holding' is the link.

Can you help me to learn more?

(Another definition for fleur that I've seen is " Soames Forsyte's daughter".)

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

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