Where many Germans are turning back from Lyonesse (5)
I believe the answer is:
essen
'where many germans are turning back' is the definition.
The answer is a location as well as being a singular noun. This is suggested by the definition.
'lyonesse' is the wordplay.
'ESSEN' is hidden back-to-front within the letters.
However, I'm not sure how this is indicated.
'from' is the link.
Can you help me to learn more?
(Other definitions for essen that I've seen before include "Main industrial city of the Ruhr" , "German industrial city on the Ruhr" , "city in the Ruhr valley" , "European city" , "German industrial centre" .)