lightbox
nounEtymology From light + box. In the Internet sense, originally the name of one specific technique.
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.
3
Internet A kind of pop-up that is overlaid across a web page while the rest of the content is dimmed.
4
A backbox.
5
A device used in phreaking that indicates when a telephone line is in use by means of a light.