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USAC; (United States Auto Club), is an open-wheel auto racing sanctioning body for Mopar Midget National Championship, Sprint Car Series, Silver Crown Series and Ford Focus Series.
"Formula 2 races are governed by the USAC sanctioning body."
USAC by aliaz May 15, 2010
Related Words
USACP • Usacan • USCP • USAC • usacate • usachatnow • usachwcr • USACO • usap • USAPatriot2007
USA Computing Olympiad
Most commonly pronounced as: You-Suck-Oh (or less commonly; You-Sack-Oh)

A 4-hour long, online programming competition for highschool kids where there are four divisions: Bronze, Silver, Gold, and Platinum. Each division features different types of problems, such as sorting, binary search, DP, greedy, graph theory, blah blah, etc.

Helpful Side-note:
Once you reach the 4th division (Platinum), you will realize that the pronounciation of the name makes sense.
Gaddamit, I forgot ONE edge-case for my program, and that killed 8 test cases!! Gaddammit, I missed the USACO Platinum cuttoff by ONE test-case..... Gaddammit, my code won't even compile!!

....I realized that I was a USACO(You-Suck-Oh).
USACO by usacokiddo January 11, 2018
To spy on and then kidnap and torture.
Pinochet totally usapped those people.

It's not just a kidnapping, it's a usapping because they were stalking him first.

The CIA used to only usap people from other countries.
usap by A Scared Moderate March 16, 2005
- to train or educate someone on the usability or usefulness of something
EX1: After the new software has been written we will usacate the users, so that they will have a better understanding of the new product.

EX2: I don't need usacation. I am an expert with this tool.

EX3: Please usacate me on this new smart phone.
usacate by NightCastle November 24, 2009
The newer, more advanced version of the United States Armed Forces in the After the Flash Universe. Typically heavily armed, but still incapable of taking over Southside.
Oh, look! The USCPF are trying to break through the MEB checkpoint again.
uscpf by Life's Goal March 9, 2017

usachatnow 

one of the best chat sites on the internet. UsaChatNow is unlike most chat sites on the internet due to protection from the moderators. usachatnow.com and find out why.
usachatnow a great chat site
usachatnow by Usachatnow August 2, 2012
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
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