alco 

abbreviation for an alcoholic, usually used jokingly not as in actual medical condition

"That's his third bottle of vodka tonight...fucking alco."

alco by itsmadeline September 27, 2005

Alco 

An American locomotive works founded in 1901 by mixing 8 independent locomotive works together (kinda like conrail, except that's railroads). Made badass and sexy locomotives e.x the Big boy class, C-630m and RS-3.
Defunct in 1969 due to bankruptcy.

Railfan: Alcos may be clunkers and not so reliable, but that's what makes them loveable.

Alco by ILikeAlcos March 21, 2022

Alco 

Alco is the kind of guy that lies a lot but will always have the back of his friends. He’s a guy you can have a good laugh with but also sometimes can be a bit annoying.

Alco is a cool guy

Alco by Helpimdrowning January 6, 2020

alco 

an abbreviation for alcohol or alcoholic

person 1: back the fuck off you alco!
alco: no you aren't

alco by some girl August 18, 2004

alco 

simply it's just an abbreviation for alcohol

alco by funky squnky June 12, 2003

Alco 

A term used to discribe something in style or cool. Can be used in any way possible, to discribe someone or something, to indicate how fun something was or just because it sounds cool.

"damn man that sounds Alco". "dude did you see that boardslide? That shit was Alco".

Alco by Chroniczz September 30, 2010

ALCO 

1. The American Locomotive Company (ALCO). It was an American manufacturer of locomotives, primarily known for producing steam locomotives, Founded in 1901, ALCO was one of the major locomotive builders in the United States and became a key player in the railroad industry. The company’s products were widely used in North America and abroad, and it was known for its innovative designs. Their biggest rival was General Motors owned Electro-Motive Division or (EMD). ALCO’s operations included manufacturing various types of locomotives for both freight and passenger services, ALCO struggled to adapt to the growing demand for diesel locomotives as steam engines fell out of favor in the mid-20th century. Eventually it was defunct in 1969.

2. An alcoholic person or alcohol for short.

1. ALCO used made lots of iconic locomotives like their steam locomotives like Union Pacific Big boy (one of the biggest steam locomotives ever built), UP 4-6-6-4 Challenger, New York central’s 4-8-4 Hudson and some diesels like the FA-2 and their switcher locomotives like the RS-2, RS-3 & RS-36.

2. You can tell that guy is an Alco by looking at his face!

ALCO by EMD F59PHI January 18, 2025