Where to swim and sunbathe at Land's End, covered with oil? (4)
I believe the answer is:
lido
This could be a double definition.
'where to swim and sunbathe at land's end covered' is the first definition.
Although both the answer and definition are singular nouns, I cannot see how they can define each other.
'oil?' is the second definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Perhaps you can see a link between them that I can't see?
'with' is the link.
Can you help me to learn more?
(Other definitions for lido that I've seen before include "bathing-beach" , "Aquatic leisure centre" , "Swimming and leisure area" , "Swim here" , "Bathing pool" .)