thumb-index

[ thuhm-in-deks ]
/ ˈθʌmˌɪn dɛks /

verb (used with object)

to provide (a book) with a thumb index.

Definition for thumb-index (2 of 2)

thumb index

noun

a series of labeled notches cut along the fore edge of a book, to indicate the divisions or sections.

Origin of thumb index

First recorded in 1900–05

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