In a manner, points to the motorway (4)
I believe the answer is:
mien
'in a manner' is the definition.
I can't judge whether this definition defines the answer.
'points to the motorway' is the wordplay.
'points' becomes 'en' ().
'to' is a charade indicator (letters next to each other) (I've seen this in other clues).
'the motorway' becomes 'mi' (resembles Me, English motorway).
'en' put after 'mi' is 'MIEN'.
Can you help me to learn more?
(Other definitions for mien that I've seen before include "A face like mine" , "Dignified manner" , "Appearance is strangely mine" , "(One's) manner, bearing" , "The carriage" .)