Flier powerless to loosen girdle? (6)
I believe the answer is:
glider
'flier' is the definition.
(I have seen 'quiet flier' mean 'glider' so perhaps 'flier' could also mean 'glider')
'powerless to loosen girdle?' is the wordplay.
'girdle' anagrams to 'GLIDER'.
But, I am not clear how the anagram is indicated.
Can you help me to learn more?
(Other definitions for glider that I've seen before include "Aircraft supported solely by air" , "Girdle for silent flier" , "Powerless aircraft" , "quiet flier" , "Unpowered plane" .)