index

中文： 索引、引得、指数

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.· This encyclopedia includes a topical index.
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. · Among the gravity indexes is the severance of diplomatic relations.
6. A sign; an indication; a token.
7. A type of noun where the meaning of the form changes with respect to the context; e.g., 'Today's newspaper' is an indexical form since its referent will differ depending on the context. See also icon and symbol.
8. A single number calculated from an array of prices or of quantities.

复数 indexes