Judge's gown (4)
I believe the answer is:
robe
'judge's gown' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for robe that I've seen before include "Gown or dress of office" , "judge's garment" , "Clerical garment" , "Any loose flowing garment" , "Long loose garment or dressing gown" .)