In fanfic, an abbreviation for a crossover from one fandom to another. Characters and/or settings from both are used.
My new Star Trek fic is an XO with Hitchhiker's Guide, where Captain Kirk meets Zaphod Beeblebrox and hilarity ensues.
by tetracycle April 24, 2008
20 more definitions
10 Words related to XO
Top Definition
XO - hugs and kisses
Actually, it's kiss (X) and hug (O)
I'll see you soon Julie,
by JD April 21, 2005
"Slogan" of The Weeknd, or Abel Tesfaye's crazy good orgasm-inducing and thought provoking musical act, so to speak.

Stands for Ecstacy and Oxycodone.
Thats that north north that up top that OVO and that XO

"Initiation" - The Weeknd
...Baby get familiar with the order
Just crack it, then pour it, then sip slow, then tip low
My eyes red but my brim low, that XO, she climbing
Straight to the top, forget why she there in the first place
No more crying, heart rate's low, put that rum down you don't wanna die tonight...
by CRIPKILLA July 28, 2012
Blow Job face, the nice little face your girl makes when she blows you.
Did you see her XO?? it was the sexiest thing ever!!
by Monstercock69 June 16, 2009
Executive Officer of an army unit. Normally the second in command of a unit as small as a company and as large as a brigade. The XO is responsible for the staff, logistics, maintenance and basically making sure everything runs smooth for the commander. At the company level its usually a 1LT, battalion level a MAJ and brigade a LTC. At higher echelon units, the XO is called the deputy commander or assistant division commander.
"The XO wants all the vehicles squared away before the long weekend"

"You better get your 4187 signed by the commander before he goes on leave otherwise you'll have to play 20 questions with the XO when he is the acting commander"
by hit the hole pole man March 09, 2006
It's a face with a black eye and one eye squinted
Mac: bitch im gonna punch chu *punches*
John: oh fuck look what u did 2 me... X.o
by Konkuro October 23, 2007
An expletive used by a Bushman when stepping on a thorn
Wow are those elephants over ther...ah xoes!
by X-r-ated November 14, 2011
Used is In the DMV mainly in VA means "Strong Grade of Marijuana"
Yoo Ima Hit The Block Uptown To Grab a $20 of XO
by 👆town August 29, 2013

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