ˈ ̷ ̷ˌ ̷ ̷ noun
Etymology: Middle English, from by (II) + way
1. : a secluded, roundabout, or little traveled road : side road
along the stretch of sandy creek-road and thence by the rough ill-tended county byway to the main road — Elizabeth M. Roberts
— contrasted with highway
2. : a secondary or little known aspect or field
has explored with great skill this byway in the development of political theory — Gordon Wright