interleaf

[ in-ter-leef ]
/ ˈɪn tərˌlif /

noun, plural in·ter·leaves [in-ter-leevz] /ˈɪn tərˌlivz/.

an additional leaf, usually blank, inserted between or bound with the regular printed leaves of a book, as to separate chapters or provide room for a reader's notes.

Origin of interleaf

First recorded in 1735–45; inter- + leaf

British Dictionary definitions for interleaf

interleaf
/ (ˈɪntəˌliːf) /

noun plural -leaves

a blank leaf inserted between the leaves of a book