A chandelier or candelabrum with three lamps for candles.(noun)
The Century Dictionary (Public Domain)
Use "three-light" in a sentence
"I have setup and worked with three-light lighting in the past, but it's been a while."
"I loved working this way -- with the combo of the digital back and the remote volume controls, zeroing in a three-light shot like the one at left was a breeze."
"TV back then -- a few black-and-white channels with a test pattern after midnight -- was a sleepy three-light town where everybody hung out at the same dull places because there wasn't much else going on."