Crossword Genius

The pointing finger (5)

Ross

I believe the answer is:

index

'the pointing finger' is the definition.
(I've seen this before)

This is the entire clue.

(Other definitions for index that I've seen before include "Guide to book contents" , "Pointing finger" , "Alphabetical listing in a book" , "Alphabetical list of names, etc., in a book" , "Reference" .)

I've seen this clue in the Evening Standard.
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