Strauss of blue jeans (4)
I believe the answer is:
levi
'strauss of blue jeans' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for levi that I've seen before include "Matthew (NT)" , "Tribe - name for Strauss" , "Hebrew patriarch, son of Jacob" , "Primo -, It. novelist" , "Jacob's son (OT)" .)