Short cut on the beach? (7)
I believe the answer is:
shingle
'the beach?' is the definition.
(I've seen this before)
'short cut' is the wordplay.
I cannot really see how this works, but
'cut' could be 'shin' (cut of meat) and 'shin' is found in the answer.
This may be the basis of the clue (or it may be nonsense).
'on' acts as a link.
Can you help me to learn more?
(Other definitions for shingle that I've seen before include "Bob" , "beach? Yes and no" , "One lying on the beach" , "Mass of small rounded pebbles" , "'hairdo'" .)