Babyish piece of mimicry (3)
I believe the answer is:
cry
'babyish piece' is the definition.
The definition and answer can be both related to communication as well as being singular nouns.
Perhaps you can see a link between them that I don't see?
'mimicry' is the wordplay.
'CRY' is hidden within the letters.
However, I am not sure how this is indicated.
'of' acts as a link.
Can you help me to learn more?
(Other definitions for cry that I've seen before include "Don't . . . over spilt milk" , "Sob or shout" , "Blubber" , "Shed tears" , "Call" .)