holophote

[ hol-uh-foht, hoh-luh- ]
/ ˈhɒl əˌfoʊt, ˈhoʊ lə- /

noun

an apparatus by which practically all the light from a lighthouse lamp or the like is thrown in a desired direction.

Origin of holophote

1840–50; back formation from holophotal ( holo- + -photal); see photic, -al1

Example sentences from the Web for holophote