Youngster turns stream around bend at Beachy Head (7)
I believe the answer is:
wolfcub
'turns stream around bend at beachy head' is the definition.
I know nothing about this answer so I cannot judge whether this works.
'youngster' is the wordplay.
I cannot quite see how this works, but
'youngster' could be 'cub' (young bear) and 'cub' is located in the answer.
The remaining letters 'wolf' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Another definition for wolfcub that I've seen is " Formerly, junior boy scout".)