Pig's head turning 180 degrees unlike before (3)
I believe the answer is:
now
'before' is the definition.
Both the answer and definition are adverbs. Maybe you can see a link between them that I can't see?
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for now that I've seen before include "Immediately" , "At the present time" , "straight away" , "At present, this instant" , "At this moment in time" .)