Pronunciation: (in'tur-lēf"), [key]
—pl. -leavesPronunciation: (-lēvz"). [key]
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.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.