thumb indexes

A form of thumb index — A series of alphabetically marked or otherwise labelled semicircular cut-outs in the fore edge of a large reference book, encyclopaedia, Bible, etc., that allows quick access to various parts of the text.

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Meanings

noun
  1. pluralplural of thumb index
Cite this entry
APA

thumb indexes. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/thumb%20indexes

MLA

“thumb indexes.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/thumb%20indexes. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “thumb indexes,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/thumb%20indexes.

Source: thumb indexes on Wiktionary, CC BY-SA 4.0.