CYO 

An acronym used to refer to the "Catholic Youth Organization". In its most common form, it is used to describe Catholic sports leagues amongst the children of the catholic religion. Basketball is the most common sport in reference to CYO and teams are comprised of the age range from grades 3-8

There was a great CYO game last night between two really good teams

CYO by CrimsonFury February 7, 2008

cyo 

cyo (check you out) in text

ight cyo

cyo by slangjanae June 7, 2018

cyo 

Some idiots think it's an acronym for "See you".

Use cya instead.

person a: Cya tomorrow
person b: dont you mean cyo?
'person a' removed 'person b' as friend.

cyo by _nullus April 21, 2017

Cyo 

A slang term for cello, often used by super orchestra geeks on sites like myspace and facebook.

I love playing cyo! Cyo is the best instrument in orch!

Cyo by Minimoonaria May 3, 2008

Cyo 

The hammers nigga out there. He is real, gets mad easily but ultimately forgives you. Can be ruthless so don’t push him. But over all a caring genuinely good person

That’s my boy CYO, always got my back

Cyo by _Anonymous14 February 4, 2020

regina coeli cyo

the reason fdr boys wake up on a saturday morning. this basketball barnyard show is crowded with white boys who believe ball is life. most kids are absolute dog shit yet take these games so seriously. few shooters and many fat kids who are finally getting exercise other than walking through the halls at school. this is where the kids who were cut from the school team thrive. its basically hyde parks NBA.

regina coeli cyo hall of fame members:
- chuck cook
- pat nesbitt
- ryan taylor
- fat ass 3 point shooter billy

kid 1: “are you gonna go watch the regina coeli cyo basketball games today?”
kid 2: “yeah i’ve been looking for a good laugh.”

regina coeli cyo by hms,hms November 3, 2021

cyock 

a cock, with more emphasis.

As Alan stood at the bus stop, he could feel Paul's heavy cyock pressing against his leg.

cyock by Herbert Schweffe November 15, 2017