pop-up book pop-up • pop valve · · · Info · Definitions · Synonyms · Characters · · pop-up book · · Text Common · · Latin · · Scripts 11 · · Length 3 · · Syllables Definitions · · · (noun) a book (usually for children) that contains one or more pages such that a three-dimensional structure rises up when a page is opened. Synonyms: pop-up book, pop-up. · · Noun Definition 1 Synonyms · · · pop-up · · Synonym 1 Characters · · space U+0020 - hyphen-minus U+002D b latin small letter b U+0062 k latin small letter k U+006B o latin small letter o U+006F p latin small letter p U+0070 u latin small letter u U+0075