Battle in street leading to goods impounded by law (8)
I believe the answer is:
struggle
'battle' is the definition.
('struggle' can be a synonym of 'battle')
'street leading to goods impounded by law' is the wordplay.
'street' becomes 'st'.
'leading to' means one lot of letters go next to another (some letters go before or lead others).
'goods' becomes 'gg' (I've seen this in other clues).
'impounded by' means one lot of letters goes inside another.
'law' becomes 'rule' (rule is a kind of law).
'gg' going within 'rule' is 'ruggle'.
'st'+'ruggle'='STRUGGLE'
'in' acts as a link.
(Other definitions for struggle that I've seen before include "Strenuous effort against odds" , "Hard contest" , "pains" , "Progress with difficulty" , "Contend; very hard task" .)