Fine underwear, low at the rear (4)

I believe the answer is:

braw

'fine' is the definition.
(synonyms)

'underwear low at the rear' is the wordplay.
'underwear' becomes 'bra' (bra is a type of undergarment).
'at the rear' suggests the final letters.
The last letter of 'low' is 'w'.
'bra'+'w'='BRAW'

(Another definition for braw that I've seen is " Fine (for the Scots)".)

I've seen this clue in The Sunday Times and The Times.

Want a hint initially instead of a full solution? Install my app