What does the word index mean?

Usage examples for index

  1. Index: Dr In command of militia, in 1777, 187. Loquin. – The Makers of Canada: Index and Dictionary of Canadian History by Various
  2. Rainfall, alone, does not, however, furnish a complete index of the crop- producing possibilities of a country. – Dry-Farming by John A. Widtsoe
  3. And I have made the index. – The Note-Books of Samuel Butler by Samuel Butler