It is a conjunction of the phrase "let's go." First used on the television show King of the Hill by Dale Gribbel. Preferably used repeatedly and increasingly intense.
"Hey guys, sco to eat?"

"sco Sco SCO SCOOO!"

"Sco, dude."
by Dave Randall June 01, 2007
Top Definition
Slang for San Francisco
lets go to the sco after school.
by Julio December 03, 2004
A Sco is a horrible person who takes things from people, while asking, but then dosn't wait for a response. You know a Sco.
Sco: "Hey man, Brah let me get some!" *Attempts to take*
You: "whoa man Don't be a sco!"
by MissionAgape October 14, 2014
An endangered species considered so pointless and useless that no effort is to be made towards conservation.
SCO is soon to be extinct.
SCO who?
by TonyM October 23, 2003
Acronym for Self Check Out. Also known as a self-serve checkout. The alternative to a manned register at a supermarket. A group of registers seen in new and refurbished supermarkets that allows customers to scan and pay for their own items, hopefully with minimal assistance from a staff member.
The staff member must press 'Go to SCO' after assisting the customer in the assistance mode so the register returns to the customer 'scan and bag' mode.
by Sos-88 August 02, 2010
a segull that shits by the beach
Wasn't too happy when the Sco had his way with my towel
by skyhigh88 February 03, 2010
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