pop-up

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

   Pop-up

2. A pop-up ball: a ball that has been hit to a considerable height above the infield or the shallow outfield; a pop fly.

   a short high fly ball

3. A folded paper element which pops up from a book, greeting card, etc.

4. A business that opens for a brief temporary period only, such as a temporary restaurant.

   a store that is open for a limited period of time on temporary premises

regular

• popupalternative