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15.
The cute nickname for Veronica Mars (off the the CW's mystery/detective show aptly named for the character.) Is called this by Logan Echolls.
LOGAN ECHOLLS: "Hey Ronnie. Hey, we’ve decided that we’d, uh, we’d rather surf than study today, you wanna come with? Duncan will promise to take his shirt off. Does that sweeten the pot?"
-

ME: "How many nicknames do you think Veronica Mars has?"
YOU: "Hmm... can't remember..."
ME: "There's Ronnie, obviously by Logan Echolls, Sugarpuss also by Logan, her whole name by Lilly Kane, possibly 'Ronica, Bond by Mac..."
by Lisa Parnell February 08, 2009
 
16.
inverted nipple (female or male), innies or crater-like nipples
Dude, my girlfriend has a ronnie on her left breast.
by flock-o June 20, 2010
 
17.
the hair above a females upper lip.
a female moustache.
she had a ronnie.
look at the ronnie on her!
jesus...pass the poor girl some ronnie removal cream.
by whydelilah May 28, 2009
 
18.
(verb) to do something really gay
I was about to fuck that girl till my roomate ronnied me by offering to drive her back to her apartment instead of making her sleep over
by Hog Mahogany May 25, 2007
 
19.
A boy who has fish flaps on the side of his head. He also loves to roll down hills and drink cider on the park. Kind of an odety, a Ronnie has many aquaintences but enjoys female company. He remembers dates and is kind of like a real life calender.

"Bruv, i saw that Ronnie on my birthday, I hadn't seen him in like ten years and he remembered."
"Dude that is way cool."


"He was dancin on the dancefloor with loads of his girl mates. I saw him do the moonwalk and then fall down a bank."

"God....he's such a Ronnie."
by Thy Blonduss Feamaluss September 03, 2008
 
20.
slang term for heroin
"i just bought a gram of that ronnie and now i'm nodding out. i think i'm gonna puke."
by jeff July 16, 2008
 
21.
To make a mistake, an error. Normally happens from not following instructions.
I think you may have done a ronnie on that job you were working on, did you follow the instructions?
by Mik the Pike September 18, 2006