Spiel over new design (7)
I believe the answer is:
pattern
'design' is the definition.
('pattern' can be a synonym of 'design')
'spiel over new' is the wordplay.
'spiel' becomes 'patter' ('patter' can be a synonym of 'spiel').
'over' says to put letters next to each other.
'new' becomes 'n'.
'patter'+'n'='PATTERN'
(Other definitions for pattern that I've seen before include "typical example" , "Model - design - example" , "Repeated decorative design" , "trend" , "Sewing plan" .)