Crossword Genius

Bats maul predator which is hard to attack (6-6)

Ross

I believe the answer is:

armour-plated

'is hard to attack' is the definition.
(something armour-plated is hard to attack)

'bats maul predator' is the wordplay.
'bats' is an anagram indicator (slang for mad).
'maul'+'predator'='maulpredator'
'maulpredator' anagrammed gives 'ARMOUR-PLATED'.

'which' acts as a link.

(Other definitions for armour-plated that I've seen before include "Well-protected" , "Having a hard defensive skin" , "Bulletproof" .)

I've seen this clue in The Times.
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