Hide, if virtually broke (4)
I believe the answer is:
skin
'hide' is the definition.
('skin' can be a synonym of 'hide')
'virtually broke' is the wordplay.
'virtually' means to remove the last letter (all but the last letter).
'broke' becomes 'skint' (I've seen this before).
'skint' with its final letter removed is 'SKIN'.
'if' acts as a link.
(Other definitions for skin that I've seen before include "Dermis" , "Peel; drum head" , "Swindle" , "Fell" , "Outer covering" .)