Wolf you flee from (4)
I believe the answer is:
bolt
'wolf' is the definition.
(I've seen this before)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for bolt that I've seen before include "Short arrow for a crossbow" , "Eat hurriedly" , "Run away suddenly; long fixing pin" , "Fastener; suddenly run away" , "Run away; fasten (door)" .)