"[fall|drop] by the wayside" Meghatározása és Jelentése

What is the origin of the idiom "fall by the wayside" and when to use it?

The idiom "fall by the wayside" originated from the practice of traveling along a path or road. In this metaphorical sense, it refers to someone or something being left behind or abandoned during a journey or process. The phrase is used to suggest that the person or thing in question fails to keep up or maintain the same level of importance, relevance, or progress as others.