Perceived welcoming old woman back as an imposition on staff (5,4)
I believe the answer is:
tenor clef
'imposition on staff' is the definition.
The answer and definition can be both related to communication as well as being singular nouns.
Maybe there's a link between them I don't understand?
'perceived welcoming old woman back' is the wordplay.
'perceived' becomes 'felt' ('feel' can be a synonym of 'perceive').
'welcoming' indicates putting letters inside (in sense of 'inviting in').
'old woman' becomes 'crone' (crone is a kind of old woman).
'back' says the letters should be written backwards.
'felt' placed around 'crone' is 'felcronet'.
'felcronet' back-to-front is 'TENOR-CLEF'.
'as an' acts as a link.
Can you help me to learn more?
(Other definitions for tenor clef that I've seen before include "One on the staff" , "It has middle C on second- highest line" , "instruction for a musician" , "A stave marking for pitch" , "Character instructing musician" .)