Obscure work -- a search with street cleared (6)
I believe the answer is:
opaque
'obscure' is the definition.
(I've seen this before)
'work a search with street cleared' is the wordplay.
I cannot really understand how this works, but
'work' could be 'op' (common abbreviation for 'opus') and 'op' is located in the answer.
'a' is within the answer.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for opaque that I've seen before include "Hard to understand, see through" , "Murky" , "Shady" , "Mysterious" , "Not transparent or clear" .)