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Short for 'arcology', itself a word invented by architect Paolo Soleri as a combination of the words 'architecture' and 'ecology' and which refers to the theory of building large, self-contained structures for human habitation. 'Arco' is usually used in the context of SimCity 2000, a computer game in which the player can build arcologies, which are enormous, odd-looking, highly expensive structures that can contain thousands of people inside them. Three of the four arcologies in SimCity 2000 (the plymouth arcology, forest arcology and launch arcology) are often named using the word 'arco' in place of 'arcology', while the fourth simply adds the letter 'd' to the word 'arco' to form 'darco' (which the game states is an acronym for Deurbanized ARcological COnstruct).
For arcologies in general:
Getting to the arcos is easy, all you have to do is make a flat city, turn disasters off and then build.

For a specific type of arcology:
I don't make forest arcos, they don't have enough population to be worth it. I always go for launch arcos instead.
arco by green_meklar March 3, 2008
Related Words
Short for asshole, in that arco's logo resembles your a-hole.
"You fucking Arco..."
Arco by Troy May 13, 2005

Arco Fuel Fuck 

A special sex maneuver that shouldn't occur....while sober.

1. Get a half flaccid, half hard penis
2. Stick the "halfie" inside of a woman
3. Urinate
4. Repeat
alex: Last night Dave was thizzled up and horny so he found this Fat bitch named Kathy and went upstairs. Since he was rather intoxicated it was hard for him to get a boner and he had to pee. So he just arco fuel fucked her.
tim: Saw that coming...
Arco Fuel Fuck by vaginaboobs December 16, 2009
You know Arco Code's a cuddly doggo, right?
arco code by what is the code July 19, 2018

arco baby 

a child of mexican blood born to border jumping parents usually born on the floor of an am pm gas station just north of the mexican border. aka texico baby, chevron baby, you get the picture
that god damn lil motherfucker you just know he is a arco baby to bad he wont be deported with his parents
arco baby by lil connor the anchor October 13, 2007

arcobaiter 

Arcobaiter it's a bigwig bohemian anarchist,improvised singer known for his flat-earth theories developed and supported through his eight grade knowledge, spread mainly over the Telegram platform, owner of his bot named "ultron5", and the historical group "Terrapiatta" and "Latitudine Zero", now he spend his time looking for triangles in "so he claims fake" images.
People also dedicated him a tribute bot that stores his best quotes.
Arcobaiter: Se mostrano immagini.... e po ci scrivono lallate...ovvio che non ci credo
Translated:
Arcobaiter:If they show us images...and then write gibberish...of course i don't belive them.

Arcobaiter: Mister cat colpito affondato da Arco baiter con la terza media
Translated:
Arcobaiter: Mister cat hit and sank from Arco baiter with my eight grade.

Arcobaiter:azzarola

A typical exrpession of surprise used by the master
Translated:
Arcobaiter:Bloody hell
arcobaiter by asadloner November 29, 2017
More from Urban Dictionary

Witch Bath 

A bath consisting of a variety of slats, oils, soaps or any other added ingredients such as fruits, milks, herbs or any other spices for health or beautifying benifits.
She brought home alot of stuff and took it to the bathroom. She must be taking a witch bath.
Witch Bath by carnieboy30 October 26, 2020
Word of the Day on October 31, 2026

kinktober 

An excuse for people to write porn with different types of kinks throughout the month of October.

Smut Fanfiction
That chick doesn't write often but when she does, its for Kinktober.
kinktober by Kinkiest July 12, 2018
Word of the Day on October 30, 2026

proper lad 

a lad that is such a lad that he is a proper lad
person1:did you see bob
person2: ya he was a proper lad
Word of the Day on October 29, 2026
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
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