Retests out new ways (7)
I believe the answer is:
streets
'new ways' is the definition.
'streets' can be an answer for 'ways' (street is a kind of way). I'm not sure about the 'new' bit.
'retests out' is the wordplay.
'out' indicates anagramming the letters (out can mean wrong or inaccurate).
'retests' anagrammed gives 'STREETS'.
Can you help me to learn more?
(Other definitions for streets that I've seen before include "Built-up roads" , "significantly ahead?" , "City thoroughfares" , "Ways" , "Town thoroughfares" .)