Vestige (noun)

1. A trace or evidence of something that is no longer present or in existence.
2. A remaining trace of something that is disappearing or no longer exists.

Origin:

From the latin word vestigium, meaning a track or footprint.

Examples:

1. The ancient ruins were the only vestiges of the once-great civilization.
2. The custom of wearing a veil is a vestige of the past.
3. The building was a vestige of the colonial era, the only one left in the city.
4. The small village was a vestige of the way of life that existed before the industrial revolution.
5. The custom of shaking hands is a vestige of medieval times, when it was used to show that the hand held no weapon.