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1.
Polycystic ovary syndrome (PCOS, also known clinically as Stein-Leventhal syndrome), is an endocrine disorder that affects five to 10 percent of women.
Sara may be unable to conceive because she has PCOS.
by Sara (Tease) March 08, 2007
 
2.
The baddest bitch in all the land. Doesn't have to try hard to get anything he/she wants because he/she is the shit.
"Did you check out the new P.Co in school, I cant wait to be his friend"
by Dennis Finch March 16, 2009
 
3.
pco
Pre come ooze.

Experienced by an aroused male. The slimy stuff that
leaks from a man's penis prior to ejaculation.
Joan touched my dick and felt the PCO and said "dude, wipe off that PCO".

by Joe LaMoy December 30, 2007