Skip to main content
Woman/ mother who carried and birthed the child; as opposed to the “StepMom” or “BonusMom” and used to differentiate the roles when there is more than one “mom”
Teacher: mother’s days is coming up! I know you have two moms, so you can make two cards. One for your BioMom and one for your StepMom!
BioMom by Mysky1234 November 3, 2024
Urban Dictionary Merch
Your favorite words on things you can wear, drink from, read, or give to a friend.
The Urban Dictionary Store sells gifts you’ll have to explain.

Osama Biomom Laden (OBL) 

The true Osama Biomom Laden resorts to empty threats and acts that could rival terrorism when dealing with their child(ren)'s Biological Father or Step Mother. She is generally insecure and must use these tactics in order to prove her own power (or lack thereof) when it comes to matters that affect the children.
She's having another Osama Biomom Laden (OBL) day. She told me she was calling the polie because I picked up my child for my parenting time.

Did you get that email from Osama Biomom Laden (OBL) that I forwarded to you? Yeah, the one that says she is taking me to court because I taught our daughter to tie her shoes!
The type of large, non-flat, see-through plastic lid used to cover Slurpees and various iced coffee drinks that allows for wide spill-over of whipped cream and other edible, non-liquid material.
"Wow, they're putting a lot of whipped cream on that iced mochachino...you're gonna need a biodome for that!"

"Oh no! My straw's too short for the biodome...I'm losin' it!"
biodome by Brett W. August 8, 2005
Word of the Day on August 14, 2005
A mother of a bro, typically drives a white suburban with an OBX sticker on the back. Often seen in clothes that are not suitable for her older age.
Dude it's like a bromomz party at CiCi's
bromomz by JakeChipAustin August 21, 2007

Biomimictarian 

An advocate of the political ideology whose blueprint for governing is the imitation of the models, systems, and elements of nature for the purpose of solving complex human problems.
The biomimictarian mentioned that if you want to take in immigrants whilst you have welfare state; you should take mithridatism into account, to preclude the welfare state from becoming overwhelmed; yet if you fight shy of a welfare state you may be able to take advantage of an open borders policy and ergo explode your GDP.

Bromoment 

Bromoment is a word that you say in a sad situation; its a mixture between Bruh and Bromine. If you use it a lot you could seem stupid.
-"Hi, I have something sad to tell you, my dog is ill"
-"Bromoment"
Bromoment by Raymon22 December 24, 2019

biomorning 

The time at which one actually wakes up, whether or not it fits the chronological definition of "morning." See also biotoday, biotonight, etc. May be used to emphasize or account for the fact that one's sleep cycle is substantially different from the norm.
When I got up this biomorning, the cat was hungry because it was already 2pm.
biomorning by G M October 31, 2007
More from Urban Dictionary

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
korean word for madam, older woman
Ajumma wait a moment
Ajumma by aintnotinbutnice July 5, 2009
Word of the Day on September 30, 2026
Load more