n. A footprint; a footstep; a track; a trace; hence, a mark, impression, or appearance of something which is no longer present or in existence; a sensible evidence or visible sign of something absent, lost, or perished; remains of something passed away.n. In biology, any vestigial organ or tissue, having little or no utility, but corresponding to a useful part existing in some lower animal. See vestigial and rudiment, 3.