Vestige • noun
/vestij/
- Trace of something that is disappearing or no longer exists
- Tiny often physical indication of something lost or vanished
- Smallest amount (used to emphasize the absence of something)
- Part or organ of an organism that has become reduced or functionless in the course of evolution

Synonyms:
Fragment, trace, mark, print, imprint, impression, evidence, legacy,
echo, ghost, relic, shadow, trace
Related words:
memento, remembrance, reminder
artifact, afterimage, aftertaste
balance, corpse, hangover, leftover, oddment
remainder, remnant, scrap
dreg(s), leavings, remain(s), residual, residue, rest