Bishop joins walk to find blackberry (7)
I believe the answer is:
bramble
'blackberry' is the definition.
(I've seen this before)
'bishop joins walk' is the wordplay.
I cannot really understand how this works, but
'bishop' could be 'b' (chess abbreviation) and 'b' is located in the answer.
'walk' could be 'ramble' (ramble is a kind of walk) and 'ramble' is present in the answer.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
'to find' is the link.
Can you help me to learn more?
(Other definitions for bramble that I've seen before include "Gather fruit" , "Rough, prickly shrub" , "Source of fruit" , "Dog rose" , "Prickly hazard" .)