Weapon used by bird of prey in brutal onslaught (5)

I believe the answer is:

talon

'weapon used by bird of prey' is the definition.
(birds of prey have talons)

'in brutal onslaught' is the wordplay.
'in' indicates the answer is hidden within the clue.
'TALON' is hidden in the letters of 'brutal onslaught'.

(Other definitions for talon that I've seen before include "Hooker" , "Raptor" , "One hooked on bird" , "Tonal (anag.)" , "E.g. hawk's claw" .)

I've seen this clue in The Times.

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