Negative-studier's aid

Wikipedia Word definitions in Wikipedia
A lightbox is a translucent surface illuminated from behind. Lightbox may also refer to: In computing : Lightbox (JavaScript) , a particular JavaScript technique that displays images in a browser using modal dialogs Lightbox, a folder on a software application/website, ...

Wiktionary Word definitions in Wiktionary
n. 1 A box containing a source of light and a white, translucent cover, used to view photographic transparencies. 2 A box containing fluorescent tubes or LED technology, used to treat people with seasonal affective disorder (SAD) and circadian rhythm disorders. ...