Indices

noun

1. An alphabetical listing of items and their location.

   "The index of a book lists words or expressions and the pages of the book upon which they are to be found."

2. The index finger; the forefinger.
3. A movable finger on a gauge, scale, etc.
4. A symbol resembling a pointing hand, used to direct particular attention to a note or paragraph.
5. That which points out; that which shows, indicates, manifests, or discloses.