Examples of thumb index in a Sentence
a dictionary that has a thumb index
THUMB INDEX Defined for English Language Learners
Definition of thumb index for English Language Learners
: a series of small cuts in the edge of the pages in a large book that are labeled and that make it easier to open the book to a particular section
Learn More about thumb index
Seen and Heard
What made you want to look up thumb index? Please tell us where you read or heard it (including the quote, if possible).