索引 (suǒ yǐn) — index (in a book or database); concordance

Definition

index (in a book or database)concordance

索引。
Zhè běn shū hòumiàn yǒu yí gè xiángxì de suǒ yǐn.
This book has a detailed index at the back.
索引。
Diànnǎo de suǒ yǐn kěyǐ bāng nǐ kuàisù zhǎodào wénjiàn.
The computer's index can help you quickly find files.
索引。
Zhè běn shū de suǒ yǐn liè chū le suǒyǒu zhòngyào rénwù.
This book's index lists all the important characters.