Skip to main content
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.

Labrador Retriever 

A medium large dog breed originating from Newfoundland. They come in three colors according to the AKC. They are the most popular breed in US for many reasons. And you will find hair laying around if one is close by.
"My dog Murphy is a Labrador Retriever."
Labrador Retriever by -anonymous15 January 10, 2014

Labranting 

To show off publicly while shirtless. Drawing attention to oneself generally in a cheesy way while shirtless
Why's that dude Labranting over there?! Put a damn shirt on son!
Labranting by GuyFawkesJeep October 4, 2020

Ladera moms 

Ladera moms are the foulest creatures in the land. They are in a Facebook group called ladera moms where they catch the “naughty” children of Ladera Ranch. An example of being “naughty” is being loud in front of someone’s house. They will take a picture of you and submit it to the group. I have studied these creatures for many days. They usually have blond hair, have a name like “Laura”, wear sunglasses all the time, wear a hat by billabong that says California love that has the California state flag on it, and talk in question form like “I’m going to the mall today?” They are all in some sort of workout class. They are always on their phone and go into some sort of universe while on their phone. If you try to talk to them they won’t hear you and if you even touch them while texts my they won’t even feel it
Ladera Ranch is home to the ladera moms
Ladera moms by G4rr3tt December 1, 2017
Arabic name meaning Night.

An extremely beautiful girl, usually with dark hair and stunning big eyes. She is liked by everyone and is popular. She is amazing. She has many friends, and she is the best friend anyone could have. She would do anything for her friends. She is a loving nice person who knows how to have fun. She is daring. She is perfection. She has crazy dance moves, and is always smiling and knows how to make people laugh, and laughs a lot too. She is a great person to be around, and likes being in a loving atmosphere. She is also very very sexy. She really has a rare beauty. She has also been through a lot, but no one knows. She is the girl you want to know and be. She is the girl with the looks and the brains but only if she knew.

A popular Eric Clapton song about a secret love, and how she has many guys that are crazy about her.
Wow, that girl is perfect she must be a Laela.
Laela by hdhdhebdudbdj July 2, 2014

Lagrangian Mechanics 

Lagrangian Mechanics is the reformulation of Newtonian Mechanics that utilizes the Lagrangian defined by

L=T-U

where

T= total kinetic energy of a system of particles
U= sum of the potential energy functions of a system of particles

In other branches of physics, the Lagrangian is defined as the function

L: TQ--> R

Where Q is the configuration space, a subset of R^3N
such that the action, defined as the functional,

A(q)= int(L) dt
when it reaches stationary value at {q(t)}, will male {q(t)} the equations of motion.
Note, int() means the integration notation with the limits of integration being positive an negative infinity, respectively.

It is shown, using the Calculus of Variations, that the equations of motion are in such a way that they satisfy the Lagrange's Equations of motion

D(d(L)/dv)-d(L)/dq=0
Where D is the differential operator with respect to time, d/dx stands for partial differentiation, and v is the generalized velocity.
Bob: Why is general relativity so tough to learn?!
Doug: Cause' you don't know enough Lagrangian Mechanics!
Lagrangian Mechanics by pinu7 November 11, 2009

lacramioara

Lacramioara it’s the kind of girl close to the definition of perfection. She is salty and whatever, she isn’t beautiful, she is beauty itself.
“That girl is such a Lacramioara.”
lacramioara by Fabrayyy January 27, 2018
More from Urban Dictionary

square grouper

Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.
"Base we've got some square groupers floating outside of Miami harbor."
square grouper by slipsheet November 6, 2004
Word of the Day on October 7, 2026
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
Load more