Press suffer defeat in court (6)
I believe the answer is:
closet
'press' is the definition.
(I know that press can be written as closet)
'suffer defeat in court' is the wordplay.
'suffer defeat' becomes 'lose' (I've seen this in another clue).
'in' is an insertion indicator.
'court' becomes 'ct' (abbreviation used in road names).
'lose' inserted into 'ct' is 'CLOSET'.
(Other definitions for closet that I've seen before include "Small room or wardrobe" , "Compartment for clothing in the US" , "A small room or cupboard" , "Small room or cabinet for storage" , "Study" .)