Focus on the pronunciation of pop-up
English definition of “pop-up”
› E-COMMERCE, MARKETING an advertisement that is shown in a new window in front of the window that you are looking at on a website: We do not allow pop-ups of any kind on our website. → Compare pop-under
› (also pop-up menu) IT a list of choices that is shown on a computer screen when the user asks for it: This pop-up can be displayed anywhere on the page with a right-click of the mouse.