What does "belshazzar" mean?

An early kind of overhead projector.

Belshazzar

Common synonyms include: biblical allusion, biblical monarch, crown prince, cultural reference, king of babylon, prince.

name, noun

name, noun ·Rare ·Advanced level

Noun

1
An early kind of overhead projector. dated
"A projector of such unusual design as the Belshazzar is a type unto itself. Whilst it projects transparencies […]"

Proper Noun

"A projector of such unusual design as the Belshazzar is a type unto itself. Whilst it projects transparencies […]"