Form of louse with wings (5)
I believe the answer is:
ousel
'wings' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how they can define each other.
'form of louse' is the wordplay.
'form of' indicates anagramming the letters (another form of the same letters).
'louse' anagrammed gives 'OUSEL'.
'with' is the link.
Can you help me to learn more?
(Other definitions for ousel that I've seen before include "Winger" , "Bird; louse (anag.)" , "Feathered vertebrate" , "18's [BIRD]" , "Common black thrush" .)