Cockney's intoxicating, in a whirl (4)
I believe the answer is:
eddy
'a whirl' is the definition.
(I've seen this before)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for eddy that I've seen before include "Rapid circular current" , "Spin" , "Miniature whirlpool" , "move in circles" , "Counter-current" .)