by·way 
/ˈbaɪˌweɪ/ noun
plural by·ways /ˈbaɪˌweɪ/ noun 1 [count] : a road that is not used very much
▪ I prefer to take byways to town. ▪ He's traveled the highways and byways of this country. 2 byways [plural] : the parts of a subject that are not commonly known
▪ the byways of the art world ▪ The book chronicles some of the interesting byways of legal history.
▪ I prefer to take byways to town. ▪ He's traveled the highways and byways of this country.
▪ the byways of the art world ▪ The book chronicles some of the interesting byways of legal history.
