work-and-tumble \ˈ ̷ ̷ ̷ ̷ˈ ̷ ̷ ̷ ̷\adverb (or adjective) orwork-and-flop\ˈ ̷ ̷ ̷ ̷ˈ ̷ ̷\ : with all the pages of a signature imposed in one form so that when the sheet is printed, turned over side for side, backed, and cut two complete copies result