.co

A new domain name extension that rose to popularity in mid 2010 due to an overwhelming majority of youth (mostly American) who couldn't be f*cked typing the letter 'm' for the previously popular extension '.com'

dotco (.co)
i want to visit the apple website...
www.apple.com WRONG
apple.com WRONG
apple.co WIN

by mike nn July 20, 2010

cos

a term in persian for pussy

Your mom's cos is so hairy that it looks like a jungle.

by joe shmoe February 16, 2004

cos

Internet contraction of the English "because", often used in chat rooms or IM sessions in order maximize wordkeystroke conservation/word.

"I liek teh int4rnet cos it's kewl n shiz."

by brazenpuppy November 2, 2003

CO:

Class of (graduation)

CO:2021 (class of 2021)

by LETC January 24, 2018

Co

It’s means you or a short for the word cool

Harry:Your ugly

You:I’m mad at co
Harry:Why are you mad at me

by lilsimpyforcedric December 29, 2021

&co.

Litterally, ‘ and company’. A lot of times used after the main character of a video-game to denote his\her sidekicks.

Can’t wait to see Sora&co. in *Kingdom Hearts II*!!

by Victor Van Styn July 30, 2005

Cos

Expression of 'cosine' in an actual math problem.

'Cos' is prounounced 'cosine'.

by Diggity Monkeez March 5, 2005