Coming into view suddenly from a concealed position. / Opening out to form a three-dimensional structure when the page of a book is opened. / Operating or existing for a brief period only; temporary.

A pop-up advertisement; an advertisement that is triggered to appear on a computer screen when an Internet user accesses a particular web page.

(idiomatic, vulgar) To break the hymen. / (idiomatic, slang, by extension) To lose one's virginity.

A soft drink flavored with ginger.

(US) A quiz or test given without warning or prior announcement.

(intransitive, informal) To leave and return in a short time. / (intransitive, informal) To die suddenly. / (transitive, informal) To kill someone.

Japanese pop music influenced by western genres

(music) A subgenre of country music that combines it with elements of pop music, produced and marketed to reach a wide audience; or a specific genre of country pop, especially the Nashville sound.

(sometimes derogatory) The lay theory or practice of psychology Abbreviation of popular psychology..

(informal) Visually astonishing, stunning, incredible.