Suggestive banter from Greek character in street (4)
I believe the answer is:
smut
'suggestive banter' is the definition.
Although both the answer and definition are singular nouns, I can't understand how they can define each other.
'greek character in street' is the wordplay.
'greek character' becomes 'mu' (letter from the Greek alphabet).
'in' is an insertion indicator.
'street' becomes 'st' (abbreviation).
'mu' going within 'st' is 'SMUT'.
'from' acts as a link.
Can you help me to learn more?
(Other definitions for smut that I've seen before include "Small flake of dirt" , "Soot flake; fungal disease" , "Obscene material" , "Dirt or immoral talk" , "black spot" .)