Definitions
1.nounAn 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.nounThe index finger; the forefinger.
3.nounA movable finger on a gauge, scale, etc.
4.nounA symbol resembling a pointing hand, used to direct particular attention to a note or paragraph.
5.nounThat which points out; that which shows, indicates, manifests, or discloses.
6.nounA sign; an indication; a token.
7.nounA 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.nounA single number calculated from an array of prices or of quantities.
9.nounA number representing a property or ratio, a coefficient.
10.nounA raised suffix indicating a power.
11.nounAn integer or other key indicating the location of data e.g. within an array, vector, database table, associative array, or hash table.
12.nounA data structure that improves the performance of operations on a table.
13.nounA prologue indicating what follows.
14.verbTo arrange an index for something, especially a long text.
15.verbTo inventory, to take stock.
16.verbTo normalise in order to account for inflation; to correct for inflation by linking to a price index in order to maintain real levels.
17.verbTo be indexical for (some situation or state of affairs); to indicate.
18.verbTo access a value in a data container by an index.