Bend, we hear, to find spots (6)
I believe the answer is:
flecks
'spots' is the definition.
(I know this)
'bend we hear' is the wordplay.
'bend' becomes 'flex' (synonyms).
'we hear' shows a homophone (sound like).
'flex' sounds like 'FLECKS'.
'to find' is the link.
(Other definitions for flecks that I've seen before include "Very small patches of colour" , "Specks, small bits" , "spots" , "Streaks" .)