ves‧ti‧gi‧al /veˈstɪdʒiəl, -dʒəl/ adjective

1. technical a vestigial part of the body has never developed completely or has almost disappeared:
The legs of snakes are vestigial or absent altogether.

2. formal remaining as a sign that something existed after most of it has gone:
his vestigial sense of pride

[TahlilGaran] Dictionary of Contemporary English ▲