A trace or remnant of something that is disappearing or no longer exists. The ancient ruins were the last vestiges of a once-great civilization.
A small amount of something. There wasn't a vestige of doubt in her mind about the decision.
In biology, an organ or structure that has lost most or all of its original function through evolution and is usually greatly reduced in size. The human appendix is considered a vestige of a larger cecum found in some herbivorous mammals.