Meaning of INDEX in English

noun a prologue indicating what follows.

2. index ·noun that which points out; that which shows, indicates, manifests, or discloses.

3. index ·noun the figure or letter which shows the power or root of a quantity; the exponent.

4. index ·noun the second digit, that next pollex, in the manus, or hand; the forefinger; index finger.

5. index ·vt to provide with an index or table of references; to put into an index; as, to index a book, or its contents.

6. index ·add. ·noun the ratio, or formula expressing the ratio, of one dimension of a thing to another dimension; as, the vertical index of the cranium.

7. index ·noun a table for facilitating reference to topics, names, and the like, in a book;

— usually alphabetical in arrangement, and printed at the end of the volume.

8. index ·noun that which guides, points out, informs, or directs; a pointer or a hand that directs to anything, as the hand of a watch, a movable finger on a gauge, scale, or other graduated instrument. in printing, a sign used to direct particular attention to a note or paragraph;

— called also fist.

Webster English vocab.      Английский словарь Webster.