pop-up

(of books, usually children's books) having pieces of artwork fastened to the pages so that when the page is opened, a three-dimensional cutout or object is formed and, sometimes, movement of a picture element, such as a door opening, can be activated by pulling a tab.

of or being a device that ejects or raises a finished or used item from the top: a pop-up toaster.

of or pertaining to a device, mechanism, or object that rises or pivots from a concealed or recessed position to its operating position: a camera with a pop-up electronic flash; a car with pop-up headlights.

popping up, as from an appliance or object: pop-up waffles heated in the toaster; a pop-up gauge for indicating when the turkey is done.

noting or pertaining to a store, restaurant, etc., that temporarily takes over a vacant space and does business there for a short time: a pop-up store selling Halloween costumes.

a pop-up book.

something, as a partially cut out or spring-mounted illustration in a children's book, that unfolds or springs up when opened or otherwise activated; pop-out: a Christmas card with a pop-up of santa claus.

Baseball. pop fly.

a pop-up store, restaurant, etc.

Computers. a pop-up message, menu, etc.: Press the hot key and the pop-up will appear.