C2 adjective /vɛˈstɪdʒiəl/
vestigial
遗迹的
Meaning
Relating to a small, undeveloped remnant of something that was once much larger or more functional.
Example
Humans have a vestigial tailbone that no longer serves its original purpose.
人类有一个遗迹的尾骨,它不再执行其原始功能。