forming a very small remnant of something that was once much larger or more noticeable 残留的,残余的;遗留的 he felt a vestigial flicker of anger from last night. 对昨晚的事他还觉得有一丝恼火。 ■(Biology)(of an organ or part of the body) degenerate, rudimentary, or atrophied, having become functionless in the course of evolution (生)(器官,身体部位)残留的,废退的 the vestigial wings of kiwis are entirely hidden. 几维鸟退化了的翅膀已完全看不见。