Run back to devour hungrily (4)

I believe the answer is:

flow

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'run back to devour hungrily' is the definition.
I can't judge whether this definition defines the answer.

'run back to devour' is the wordplay.
'run back' is a reversal indicator (I've seen 'running back' mean this).
'to devour' becomes 'wolf' (I've seen this in another clue).
'wolf' backwards is 'FLOW'.

Can you help me to learn more?

(Other definitions for flow that I've seen before include "Uninterrupted stream" , "Move along as a stream" , "Fluid motion" , "Wolf (anag.)" , "Run or move like a liquid" .)

I've seen this clue in the Evening Standard.

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