Word familyadjectivethumbedthumblessthumblikethumbynounthumbikinsthumblingthumb indexthumbnailthumbnutthumbpiecethumbpotthumbprintthumbscrewthumbstallthumbtackthumb
Related topics: Newspapers, printing, publishing
ˈthumb ˌindex noun [countableC]
TCNa line of round cuts in the edge of a large book which have the letters of the alphabet on them and help you find the part of the book you want 拇指索引,书边挖月索引