Stranger occupies street, striking (7)
I believe the answer is:
salient
'striking' is the definition.
('salient' can be a synonym of 'striking')
'stranger occupies street' is the wordplay.
'stranger' becomes 'alien' ('alien' can be a synonym of 'stranger').
'occupies' means one lot of letters goes inside another.
'street' becomes 'st'.
'alien' put into 'st' is 'SALIENT'.
(Other definitions for salient that I've seen before include "Noteworthy" , "Outstanding - it's lean (anag)" , "Conspicuous; pointing outwards" , "Prominent, striking" , "Prominent - in tales (anag)" .)