I tucked into banned item, with spinning head (5)
I believe the answer is:
onion
'head' is the definition.
(informal term for someone's head or brain)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for onion that I've seen before include "Edible tear-jerker" , "Eye-watering vegetable" , "Head (slang); vegetable" , "veggie" , "Bulb used as a vegetable" .)
