Dictionary.com

thumb index

Save This Word!

noun
a series of labeled notches cut along the fore edge of a book, to indicate the divisions or sections.
QUIZ
QUIZ YOURSELF ON AFFECT VS. EFFECT!
In effect, this quiz will prove whether or not you have the skills to know the difference between “affect” and “effect.”
Question 1 of 7
The rainy weather could not ________ my elated spirits on my graduation day.
Meet Grammar CoachWrite or paste your essay, email, or story into Grammar Coach and get grammar helpImprove Your Writing
Meet Grammar CoachImprove Your Writing
Write or paste your essay, email, or story into Grammar Coach and get grammar help

Origin of thumb index

First recorded in 1900–05

Other definitions for thumb index (2 of 2)

thumb-index
[ thuhm-in-deks ]
/ ˈθʌmˌɪn dɛks /

verb (used with object)
to provide (a book) with a thumb index.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use thumb index in a sentence

British Dictionary definitions for thumb index

thumb index

noun
a series of indentations cut into the fore edge of a book to facilitate quick reference
verb thumb-index
(tr) to furnish with a thumb index
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
FEEDBACK