" byway "

[Noun]  | "by*way" | \ ˈbī-ˌwā \

1: a little traveled side road

2: a secondary or little known aspect or field

Origin: 14th century ;

[Noun]  | "way" | \ ˈwā \

1: a thoroughfare for travel or transportation from place to place

2: an opening for passage

3: the course traveled from one place to another : route

Origin: before 12th century ;

 Middle English, from Old English weg; akin to Old High German weg way, Old English wegan to move, Latin vehere to carry, via way;

[Idiom]  | "by way of explanation" 

1: as a reason or reasons

[Idiom]  | "by way of illustration" 

1: as an example

[Noun]  | "byway" 

[Phrase]  | "by the way" 

[Phrase]  | "by way of"