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Byway

//ˈbaɪweɪ// noun

Noun

1
A road or track not following a main route; a secondary or minor road or path.
"Near-synonyms: back road, back street, back lane"
2
a side road little traveled (as in the countryside) wordnet
3
A road that is not frequently travelled.
4
a little-known or arcane field of study or detail. broadly
"Though his account of written communication over the past 5,000 years necessarily has a powerful forward momentum, his diversions down the fascinating byways of the subject are irresistible ..."

From Middle English bywey, equivalent to by- + way.

Unscramble this word: byway