Short for Pulse Oximeter.

A PO is a device used to monitor the oxygen in a patient's blood. It shines light through a patient's finger, toe, nose, earlobe, or the patient's forhead, and another sensor on the other side of the light wave measures how the light is being absorbed.
1. He's on a PO machine, and they are going to have to put hom on the ventilator, because his oxygen is 85 so he is having another set of desat episodes.
by 1992peter March 27, 2010
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Top Definition
The red teletubby
Po: Uh-oh!
by Gwen Stefani Grrl November 24, 2003
Derogitory for vagina, or someone who acts like a cunt.
Pass the spliff you fucking poes!
Jesus that cunteater is a slippery poes!
Dont be a poes.
by Mike May 02, 2003
Shortened version of poor, usually reserved to describe someone of extreme poverty.
He's so po he couldn't afford the other half of the word.
by The General April 02, 2004
Origin: Afrikaans slang term for woman's vagina; can be used very effectively when slagging anyone off
He is such a hairy poes
by JP January 21, 2005
police officer
see also:cops, pigs, fuzz, popo, 5-0, bacon, pork
"Run!!! It's the po!"
by Lila December 30, 2003
Parole Officer (PO)
by Anonymous July 27, 2003
Short for "Probation Officer".
"Your P.O. fucking sucks!"
by Mike August 26, 2003

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