Refine start of your search in maze (9)
I believe the answer is:
honeycomb
'maze' is the definition.
(I've seen this before)
'refine start of your search' is the wordplay.
'refine' becomes 'hone' (hone can mean to refine or improve).
'start of' says to take the initial letters.
'search' becomes 'comb' (combing is a kind of searching).
The first letter of 'your' is 'y'.
'hone'+'y'+'comb'='HONEYCOMB'
'in' acts as a link.
(Other definitions for honeycomb that I've seen before include "Mass of cells formed by bees" , "Bees' wax structure for holding eggs and honey" , "it's full of holes" , "Structure of hexagonal cells" , "Natural formation of hexagons" .)