A walk amid the blackberry bushes (6)
I believe the answer is:
ramble
'a walk' is the definition.
(ramble is a kind of walk)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for ramble that I've seen before include "Roam about" , "Go as fancy leads" , "Walk as leisure activity" , "Show incoherence" , "Take a country walk" .)