Something to climb over drunk locates round back of pub (8)
I believe the answer is:
obstacle
'something to climb' is the definition.
I can't judge whether this definition defines the answer.
'drunk locates round back of pub' is the wordplay.
'drunk' indicates anagramming the letters.
'round' indicates putting letters inside.
'back of' indicates one should take the final letters.
The last letter of 'pub' is 'b'.
'locates' anagrammed gives 'ostacle'.
'ostacle' placed around 'b' is 'OBSTACLE'.
'over' acts as a link.
Can you help me to learn more?
(Other definitions for obstacle that I've seen before include "Progress blocker" , "It hinders or prevents advance" , "Hurdle, impediment" , "Hindrance, obstruction" , "hold-up" .)