Unusually dangly for an insect (9)
I believe the answer is:
dragonfly
'an insect' is the definition.
(dragonfly is a kind of insect)
'unusually dangly for' is the wordplay.
'unusually' indicates an anagram.
'dangly'+'for'='danglyfor'
'danglyfor' with letters rearranged gives 'DRAGONFLY'.
(Other definitions for dragonfly that I've seen before include "creature!" , "Large hovering insect" , "Insect with two pairs of transparent wings" , "it wings along" , "Large winged insect" .)