black light

noun — 2 senses

black light

noun

Etymology From black + light, since ultraviolet light is invisible to the human eye.

1

A light bulb that emits ultraviolet light, usually used to create the illusion that anything white is glowing.

  • Blacklights and a mirrored disco ball Every night's another reason why I left it all2020 April 3, Chappell Roan, Dan Nigro, “Pink Pony Club”performed by Chappell Roan:
2

Slang Ultraviolet radiation or light.

Synonyms
ultraviolet light
Hypernyms
light

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.