Wind swallowing tablet turning sweet (8)
I believe the answer is:
'sweet' is the definition.
(lollipop is a kind of sweet)
'wind swallowing tablet turning' is the wordplay.
'wind' becomes 'loop' (looping is a kind of winding).
'swallowing' is an insertion indicator.
'tablet' becomes 'pill' (synonyms).
'turning' says the letters should be written backwards.
'pill' written backwards gives 'llip'.
'loop' placed around 'llip' is 'LOLLIPOP'.
(Other definitions for lollipop that I've seen before include "Sweet on a stick" , "Candy on a stick" , "Sweet; popular work" , "Sweet for suckers?" , "Boiled sweet" .)