In disrobing, he may give a little flutter (5)
I believe the answer is:
robin
'give a little flutter' is the definition.
Although both the answer and definition are singular nouns, I cannot see how one could define the other.
'in disrobing he' is the wordplay.
'in' says the answer is hidden in the clue.
'ROBIN' is hidden within 'disrobing he'.
'may' acts as a link.
Can you help me to learn more?
(Other definitions for robin that I've seen before include "Traditional Christmas card bird" , "Red-breasted songbird" , "Batman's assistant" , "Hood, possibly" , "boy" .)