Salesman's talk on new model (7)
I believe the answer is:
pattern
'model' is the definition.
(pattern is a kind of model)
'salesman's talk on new' is the wordplay.
'salesman's talk' becomes 'patter' (I've seen this before).
'on' says to put letters next to each other.
'new' becomes 'n'.
'patter'+'n'='PATTERN'
(Other definitions for pattern that I've seen before include "Decorative design; model" , "Ornamentation" , "Example; decorate" , "trend" , "typical example" .)