Pony, hot and shaken, may create havoc (7)
I believe the answer is:
typhoon
'havoc' is the definition.
Although both the answer and definition are singular nouns, I don't understand how one could define the other.
'pony hot and shaken may' is the wordplay.
'pony hot' anagrams to 'TYPHOON'.
Though, I'm not sure how the anagram is indicated.
'create' acts as a link.
Can you help me to learn more?
(Other definitions for typhoon that I've seen before include "Indian Ocean cyclone" , "Violent storm - WWII aircraft" , "Storm, cyclone" , "Violent cyclonic storm" , "severe blow" .)