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the most popular opening move in chess where the pawn immediately in front of the king moves two spaces forward.

it immediately gains control of the center and also frees the queen and king's bishop. at the same time, it places a pawn on an undefended square and weakens d4 and f4.

a response of 1...e5 results in an open game.
bobby fischer rated 1. e4 best by test
e4 by anonymous^X January 15, 2008
A channel owned by Channel 4. Airs on UK tv: Freeview, Sky and On-Demand. Best Channel Eva.
"Did you watch Baby Daddy on E4 ?'
E4 by Clicker7 August 17, 2017
Related Words
e4 • E46 • E45 • E4E • E4-Whore • e404 • E404.au • E42 • e46fanatics • E4ich
e4.
e4 by archnet May 11, 2018
The fabled sequel to E3 only mentioned in the tales of folk.
Person: Man if E3 is so good why haven't they made E4 yet?
E4 by I have many sex June 18, 2021

E4-Mafia 

The term E-4 Mafia refers to the network of SrAs, SPCs (and some CPLs) who do most of the things that actually get done in the Army and Air Force. Not all E-4s are in the Mafia, but by the time you get to E-4, they've probably done something for you, and by the time you finish being an E-4, you'll probably have done something for them, too.

They are the support personnel in positions where they know what is going on, know what is going to happen, and "know a guy" who can get things done that you need done.

Need a last minute appointment at the Dental Clinic? The E-4 Mafia has an agent in place that can make that happen for you.
Have a pay problem that needs resolving? The E-4 Mafia has a finance clerk that really knows how to get things fixed.

Need someone to take your CQ runner shift next weekend? The e-4 Mafia know a guy who's willing to do it for $100.
Have a new troop who's ate up like a soup sandwich? The E-4 Mafia know a guy who can train him.

But there's a dark side as well.
Have a supervisor who is a real PITA? Your E-4 Mafia can make his life into a little slice of hell. Appointments get rescheduled, supplies are not there for him, his POV always comes up for the "random" search at the gate, his pay problem paperwork stays at the bottom of the in-pile for two extra weeks, his dental appointment is with "the butcher" instead of the good one, he's always the last to get the word about anything in the unit, etc.
I was supposed to be PCSing in June, but my assignment got delayed, I couldn't get a resolution through normal channels, then the E4-Mafia got involved, a buddy called a friend at HQ, sorted things out, and my orders came through in two days.
E4-Mafia by WTF-O August 8, 2017

E4-Mafia 

The E-4 Mafia is the unofficial "gang" of the Specialist rank in the U.S. Army. Notorious for knowing more than the E-5 Sergeants and normally too much for their own good. Squad leaders are usually very pissed off when "secret" plans reach the E-4 Mafia before THEY even hear about it. Usually their intelligence comes from untrustworthy sources, but sometimes they get lucky.
GOD DAMN THAT E4-MAFIA, HOW MANY TIMES DO I HAVE TO TELL YOU NOT TO LISTEN TO THEM, PRIVATE!!
E4-Mafia by Mikeymoped December 31, 2010

E4-Whore 

The highest class of a pimp. E4-whores generally degrades women and uses them as a sex toy with little to no respect
jim: hey steve do you see how george treats his girlfriend?
steve: yea bro he’s a classic E4-Whore
E4-Whore by saucedbandz March 24, 2020
More from Urban Dictionary
The number of years you are still sexually active
While our lifespan is the number of years we will live, our healthspan is the number of healthy years we will have and our sexspan is is the number of years we will continue to be healthy enough to continue having an active sex life.
sexspan by Dr Kat April 21, 2022
Word of the Day on October 28, 2026
A lighthearted reaction upon receiving disappointing news of some sort. Usually something that isn't a particularly a big deal, esp. when it primarily affects someone else - sort of a mild schadenfreude. Sometimes doubled or tripled, and possibly said in a sing-songy voice for added comedic effect to imitate a muted trumpet, which is how the meme originated.
You didn't get any napkins with your takeout pork fried rice? Womp womp.
womp by 175623226 November 3, 2011
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When your wife’s boyfriend let you sleep past 8pm 😎😎
Wife’s boyfriend: You have 5 more minutes
Me: Poggers!
Poggers by Just_Charles April 14, 2020
Word of the Day on October 26, 2026
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