Go round in improvised glider (6)
I believe the answer is:
girdle
'go round' is the definition.
(thesaurus)
'improvised glider' is the wordplay.
'glider' can be anagrammed to 'GIRDLE'.
Though, I'm not sure how the anagram is indicated.
'in' acts as a link.
Can you help me to learn more?
(Other definitions for girdle that I've seen before include "historic zone" , "Belt, corset" , "A belt or cord around the waist" , "Encircle" , "Female undergarment" .)