Dashing, little bird hasn't finished (4)
I believe the answer is:
chic
'dashing little' is the definition.
'chic' can be an answer for 'dashing' (thesaurus). I am not certain of the 'little' bit.
'bird hasn't finished' is the wordplay.
'bird' becomes 'chick' (chick is a kind of bird).
'hasn't finished' means to remove the last letter.
'chick' with its last letter removed is 'CHIC'.
Can you help me to learn more?
(Other definitions for chic that I've seen before include "Smart and stylish, in a French kind of way" , "Smart - elegant - fashionable" , "Modish" , "Trendy" , "Stylishly turned out" .)