On holiday? Feeling glum, missing love, beside borders of China (7)
I believe the answer is:
camping
'on holiday? feeling' is the definition.
The answer and definition can be both acts as well as being singular nouns.
Maybe there's a link between them I don't understand?
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for camping that I've seen before include "leisure activity" , "Type of holiday" , "Living in a tent" , "Taking temporary shelter" , "Bivouacking" .)