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1 : the cavity of a tubular organ or part the lumen of a blood vessel
2 : the bore of a tube (as of a hollow needle or catheter)
3 : a unit of luminous flux equal to the light emitted in a unit solid angle by a uniform point source of one candle intensity
The ReVolt is waterproof and rechargeable with a whopping 300 lumens at full power.
lumen by Bonzai May 31, 2018
Words you can keep
Lumen is doing your mom.
Lumen by Mario Pierluisi October 25, 2020
less than human
or one who sleeps on floor at a lan party
he is such a lumen for sleeping on the floor at the lan party
lumen by kiprian November 16, 2005
Lumen je petra parcina
Petra parcina je lumen
Lumen by Petra parcina December 20, 2021
A sudden, localized surge of profound internal warmth, safety, and cognitive clarity that emerges directly in the center of a vast, overwhelming emotional void or period of mental darkness—acting as an inviting, concentrated beacon of comfort without erasing the surrounding emptiness.
Example: "Amidst the heavy, exhausting grief of the past month, sitting quietly with his morning coffee brought a sudden wave of lumen, a small pocket of absolute peace that made the surrounding darkness feel distant and bearable."
Lumen by wordwiz093 June 3, 2026

lumen living

A phrase used to describe living a lifestyle of the most extravagant, opulent and luxurious variety. Lumen living means that you have reached the stage where money is no object.
Having made a billion pounds in the bank - "I am lumen living".
lumen living by Pipelayer17 January 28, 2012
The act of putting a light bulb up your anus and turning the light bulb on.
He did a lumen pie yesterday!
Lumen pie by Skib101 April 28, 2026
More from Urban Dictionary

endwarfins

The rush of neurotransmitters and neuropeptides triggered specifically by watching the Seven Dwarfs march home singing "Heigh-Ho" — that particular high of pickaxes, whistling while you work, and communal domestic bliss in a cottage built for men half your height.
I only meant to watch the Heigh-Ho scene for the endwarfins, and then it was two hours later and I'd watched the whole movie.

Endwarfins aren't just a Snow White thing — I get the same hit off the Lollipop Guild in Oz.
endwarfins by Howard Ogden September 13, 2026
Word of the Day on September 14, 2026
A slang term used to describe a bald person, typically someone who is completely bald or has a closely shaved head. The term is derived from the infamous, hairless kids’ cartoon character of the same name.
Example 1:
“Did you see that caillou over there? His head is reflecting the sun like a disco ball.”
Example 2:
“I think Dave is finally accepting his hair loss. He just went full caillou and shaved the whole thing off.”
caillou by WMH01 September 12, 2026
Word of the Day on September 13, 2026
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