The most common and most likely answer to this crossword clue is the 6 letter word BOREEN
B
O
R
E
E
N
Buddy explains!
The straight part
We know that "Minor road" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case minor road = boreen.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does BOREEN mean?
BOREEN noun- A narrow, frequently unpaved, rural road in Ireland.