A road from home (4)

I believe the answer is:

away

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'home' is the definition.
Both the definition and answer are adjectives. Maybe they are linked in a way I don't understand?

'a road' is the wordplay.
'road' becomes 'way' (I've seen this in other clues).
'a'+'way'='AWAY'

'from' acts as a link.

Can you help me to learn more?

(Other definitions for away that I've seen before include "Distant or not present" , "Like some fixtures" , "Missing" , "Away in the distance" , "See 1" .)

I've seen this clue in The Irish News.

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