Unusually fat at the rear (3)

I believe the answer is:

aft

'at the rear' is the definition.
(I've seen this before)

'unusually fat' is the wordplay.
'unusually' indicates anagramming the letters.
'fat' anagrammed gives 'AFT'.

(Other definitions for aft that I've seen before include "Behind (naval)" , "Towards the rear at sea" , "Astern" , "Near the rear (of ship)" , "back to sailors" .)

I've seen this clue in the Evening Standard.

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