Master new flow (6)

I believe the answer is:

stream

'flow' is the definition.
(I know that flow can be written as stream)

'master new' is the wordplay.
'new' indicates an anagram.
'master' with letters rearranged gives 'STREAM'.

(Other definitions for stream that I've seen before include "Master (anag) - current" , "Brook, burn" , "Small narrow river" , "Master of a tributary" , "Rill, brook" .)

I've seen this clue in The Mirror.

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