US singer’s swish and mostly eager to receive publicity (9)
I believe the answer is:
chickadee
'us singer's' is the definition.
'chickadee' can be an answer for 'singer's' (chickadee is a kind of birdanimal). I am not sure about the 'us' bit.
'swish and mostly eager to receive publicity' is the wordplay.
I cannot really see how this works, but
'publicity' could be 'ad' (short for advertisement) and 'ad' is located in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for chickadee that I've seen before include "flier from America" , "US bird" .)