Pop-up

Full definition of pop-up

Adjective

1. coming into view suddenly from a concealed position
2. opening out to form a three-dimensional structure when the page of a book is opened

Noun

1. Something that pops up.
2. A pop-up advertisement; an advertisement that is triggered to appear on a computer screen when an internet user accesses a particular web page.
3. (baseball) A ball that has been hit to a considerable height above the infield or the shallow outfield; a pop fly.
4. A folded paper element that forms a three-dimensional structure when a folded paper product, such as a book or greeting card, is opened.
5. A temporary restaurant.
• Lonely Planet San Francisco Travel GuidePop-ups often charge restaurant prices, but without advance menus, quality control, health-inspected facilities or professional service. Bring cash and arrive early: most pop-ups don't accept credit cards, and popular dishes run out fast.