Crossword Genius

Witnesses aim to break close relatives? (7,5)

Ross

I believe the answer is:

siamese twins

'close relatives?' is the definition.
(conjoined twins)

'witnesses aim to break' is the wordplay.
'to break' indicates an anagram.
'witnesses'+'aim'='witnessesaim'
'witnessesaim' is an anagram of 'SIAMESE TWINS'.

(Other definitions for siamese twins that I've seen before include "Siblings joined at birth" , "We're United" , "Physically joined babies" .)

I've seen this clue in The Times.
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