On which, lacking the fare, one walks (6,5)
I believe the answer is:
hunger march
'on which lacking' is the definition.
I can't tell whether this definition defines the answer.
'fare one walks' is the wordplay.
I cannot really see how this works, but
'fare' could be 'marc' (marc is a kind of food) and 'marc' is present in the answer.
'one' could be 'un' (northern English dialect form of 'one') and 'un' is present in the answer.
This explanation may well be incorrect...
'the' acts as a link.
Can you help me to learn more?
(Other definitions for hunger march that I've seen before include "movement that brings protest" , "1936 Jarrow demonstration" .)