way·side 
/ˈweɪˌsaɪd/ noun
plural way·sides /ˈweɪˌsaɪd/ noun [count] : the land next to a road or path
▪ Flowers grew along the wayside. — often used before another noun ▪ a wayside inn/restaurant
▪ Flowers grew along the wayside. — often used before another noun ▪ a wayside inn/restaurant
by the wayside
: into a state of no longer being considered, used, etc.
▪ We were going to redo the kitchen this spring, but those plans have fallen/gone by the wayside. [=we have dropped/abandoned those plans] ▪ traditions that are falling by the wayside
▪ We were going to redo the kitchen this spring, but those plans have fallen/gone by the wayside. [=we have dropped/abandoned those plans] ▪ traditions that are falling by the wayside
