edge index
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English
[edit]![](http://upload.wikimedia.org/wikipedia/commons/thumb/2/25/HandmarkeKopfschnitt.jpg/220px-HandmarkeKopfschnitt.jpg)
Noun
[edit]edge index (plural edge indexes)
- A series of alphabetically marked or otherwise labelled inked areas that bleed to the trim, often in the fore edge, of a large reference book, encyclopaedia, Bible, etc., to allow quick access to various parts of the text.
- Coordinate term: thumb index