Cave in western America - I'm unsure about measure of the volume and breadth (7)
I believe the answer is:
succumb
'cave' is the definition.
(I've seen this in another clue)
'western america i'm unsure about measure of the volume and breadth' is the wordplay.
I cannot quite see how this works, but
'about' could be 'c' (circa) and 'c' is found in the answer.
'measure' could be 'mb' (Mb is an example) and 'mb' is found within the answer.
This may be the basis of the clue (or it may be nonsense).
'in' is the link.
Can you help me to learn more?
(Other definitions for succumb that I've seen before include "Give in - die" , "Give in, knuckle under" , "Capitulate" , "Give in (to disease, etc)" , "Give in (to temptation etc)" .)