Yobbo hogged pole to make like a hog (4)
I believe the answer is:
oink
'hog' is the definition.
Although both the answer and definition are verbs in their base form, I cannot see how they can define each other.
'yobbo hogged pole to make' is the wordplay.
I cannot really understand how this works, but
'pole' could be 'n' (abbreviation for North, as in North Pole) and 'n' is found within the answer.
The remaining letters 'oik' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
'like a' acts as a link.
Can you help me to learn more?
(Other definitions for oink that I've seen before include "Porcine sound" , "Swine sound" , "Sound from a sty" , "Animal sound" , "Pig's noise" .)