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1) A heavy metal with several industrial applications.

2) Something, normally musical, that can be described as very heavy.
I saw motorhead last night and Lemmy's base sound was just osmium.
osmium by black flag June 1, 2004
Related Words
1) A hard, brittle, bluish-white metal. It is the densest (heaviest) naturally occurring element of all known elements, with a density of 22.59 g per cubic cm.

2) What to call someone who looks seemingly skinny, but actually weighs a ton.
1) Did you know that Osmium was once used in phonograph needles?

2) Yo look at that Osmium over there. She may look lean, but I heard she weighs 200 pounds!
Element #76 with the symbol Os, a.k.a. the bluest metal in the world. Although it might seem pretty, Osmium is far from being good jewelry or building material, unless you want things with unbelievably high costs. It's a relatively non-toxic substance, granted that you don't combine it with Oxygen. Its name comes from the Greek word "Osme", which means "smell", "scent", or "odor". This definition refers to the nasty volatile compound that occurs when you mix Oxygen with the latter. It's also an extremely heavy metal, weighing 5x more than Lead does.
Osmium is the heaviest, stable metal in the universe.
Osmium by CHNOPS July 8, 2020
The densest known element used to roast the density (stupidity) of your fellow peers.
Dude, Tony was so Osmium when he ran into that door!
Osmium by Cena Senior March 4, 2021
The length of time in which your girlfriend's gay roommate can do whatever, whenever, to your mouth, cock, ass, balls, and shaft and you can't tell him to stop.
Damn Stephen, can't wait for you and Adam to Osmium.
Osmium by cunds002 April 6, 2018
oImDumb is a Very cool Hospitality team memeber
oImDumb is amazing!
oImDumb by Synthle July 3, 2021
More from Urban Dictionary
A girl who does ballet and only talks about ballet. Her schedule is filled with dance classes which does not allow her to do any other activity.
"Hey, do you know that girl Sally?"

"Yeah, she's kind of annoying. All she ever talks about it ballet."

"Wow, what a Bunhead."

"Hey Sally, you want to hang out this weekend?"
"I can't, I have dance."
"You're such a Bunhead."

"Yeah... I know."
Bunhead by Jen00 October 24, 2014
Word of the Day on October 6, 2026

trucker's tan 

A sunburn or suntan focused on the left arm. It is caused by the left side of the body being the only half that gets exposed to sunlight while driving. Presumably, it would be located on the right side of the body in countries where they drive on the left side of the road.
I had a trucker's tan after driving for 10 straight hours on a sunny day.
Word of the Day on October 5, 2026
The phenomenon where adults salivate at children's toys
Every time I walk into the toy aisle, I catch myself kidulting over the latest action figures and LEGO sets!
kidulting by Emotional Cruiser October 12, 2025
Word of the Day on October 4, 2026
British slang for a scientist or technical expert, esp . when the speaker is not certain of the expert’s specific field of study. Not necessarily derogatory, but typically used by persons without a technical background. In the US, the equivalent would be “egghead”, “squint”, or “geek.”

Origin of the word is unknown. Started sometime in World War 2. Given the typical evolution of British slang, could easily have started because what these experts did was confusing or “baffling” to the common person.
According to the boffins downstairs, the murderer used a serrated blade.
Boffin by Agnon February 11, 2023
Word of the Day on October 3, 2026

Pee Calculus

When you have to pee in a movie but don’t want to miss anything, and must do the following mental equation: will the amount I have to pee cause enough discomfort to diminish my attention capacity for the remainder of the movie to an extent which is greater than the amount of the movie I would miss by making a mad dash to the restroom.
I saw Satantango last night, wonderful film but by the 5th hour I had to start doing pee calculus.
Pee Calculus by anorlondo October 1, 2026
Word of the Day on October 2, 2026
Literally "dirty" pronounced with a West Indian accent. Can also have a positive connotation, for example Sean Paul's album title "Dutty Rock".
"The girl is pretty but she corrupt and dutty!"

or, in a positive usage:

"Booya! That freestyle was dutty!"
Dutty by J Hall April 3, 2003
Word of the Day on October 1, 2026
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