Unusual for English clues to shed light (9)
I believe the answer is:
fluoresce
'shed light' is the definition.
Although both the answer and definition are verbs in their base form, I cannot understand how one could define the other.
'unusual for english clues' is the wordplay.
'unusual' indicates anagramming the letters.
'english' becomes 'E' (abbreviation).
'for'+'e'+'clues'='foreclues'
'foreclues' anagrammed gives 'FLUORESCE'.
'to' is the link.
Can you help me to learn more?
(Other definitions for fluoresce that I've seen before include "glow brightly" , "Emit light when irradiated" .)