Spiel from salesman with new model (7)
I believe the answer is:
pattern
'model' is the definition.
(I know that model can be written as pattern)
'spiel from salesman with new' is the wordplay.
I cannot really see how this works, but
'spiel' could be 'patter' (synonyms) and 'patter' is found within the answer.
'new' could be 'n' (common abbreviation eg NT for New Testament) and 'n' is located in the answer.
No letters remain.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for pattern that I've seen before include "A guide for making something" , "Arrangement of repeated parts of design" , "Model - design - example" , "Design for copying" , "Decorative design; model" .)