wayside
Concise Oxford English Dictionary © 2008 Oxford University Press:
wayside/ˈweɪsʌɪd/
▶noun the edge of a road.
– phrases
fall by the wayside fail to persist in an undertaking. [with biblical allusion to Luke 8:5.]
fall by the wayside fail to persist in an undertaking. [with biblical allusion to Luke 8:5.]
'wayside' also found in these Oxford entries:

