Rescue brute, grabbing tail finally (7)
I believe the answer is:
salvage
'rescue' is the definition.
(salvaging is a kind of rescuing)
'brute grabbing tail finally' is the wordplay.
'brute' becomes 'savage' (synonyms).
'grabbing' is an insertion indicator.
'finally' says to take the final letters.
The final letter of 'tail' is 'l'.
'savage' going around 'l' is 'SALVAGE'.
(Other definitions for salvage that I've seen before include "Rescue of property as from fire or flood" , "Rescued material" , "Recover (cargo from wreck)" , "Retrieve goods from wrecked ship" , "Rescue (lost cargo)" .)