index
In bookbinding, the words, letters, numbers, etc.,
printed, stamped or pasted in alphabetical,
numerical, or other order: 1) in spaces cut or
gouged in the fore edge of the book; 2) tabs
attached to the leaves at the fore edge; or 3)
printed on the leaves of the book, or on separate
sheets to be inserted in their proper position in
the book. The purpose of the index is to
facilitate quick reference to the contents. See
also:CUT THROUGH
INDEX ;ONE-LETTER
INDEX ;TAB
INDEX ;THUMB
INDEX ;TWO-LETTER
INDEX .