Beg for parking by the front (5)
I believe the answer is:
plead
'beg' is the definition.
(I know that beg is a kind of plead)
'parking by the front' is the wordplay.
'parking' becomes 'p' (abbreviation on road signs).
'by' means one lot of letters go next to another.
'the front' becomes 'lead' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'p'+'lead'='PLEAD'
'for' acts as a link.
Can you help me to learn more?
(Other definitions for plead that I've seen before include "Respond to charge" , "Say one is guilty or not guilty" , "State whether one is guilty or not" , "Beg or petition" , "Claim; entreat" .)