Top Definition
siobhán means perfection. the ultimate in all qualities!gorgeous, sweet, loving, caring, completely wonderful.
"you can't be siobhán! you're not perfect!"
by jamaize November 23, 2004

unbelieveably beautiful and fun and totally loveable girlfriend
Person 1: Hey have u heard about my new girlfriend?

Person 2: O yah siobhan? shes unbelievably beautiful and fun and totally loveable. congrats on that score!
by F13ND December 13, 2005
Various meanings.

To be cool, calm and collected.
To be a woman of intelleguallity.
To be so very janga.
To be the greatest friend there is.
To be teh highest apple anyone can ever wish for.
To be a very beautiful person: gorgeous looks and amazing personality.
Siobhán is my friend. I'm the lucky one.
by Dinky Dinner Pie aka Baby Girl February 09, 2005
my best friend very nice, smart, pretty, athletic....
in 1 word - perfect
Ex.1 Wow.... That girl is such a Siobhan! She's so nice, smart, pretty, athletic.

by CharmingCarly November 10, 2006
The greatest girl in the world, the best girlfriend I even hope to have, and someone who I can't live without. Increadibly beautiful and perfect.
Siobhan is the greatest girl in the world, hands down.
by Chrostek August 22, 2006
sexy smart classy hot amazing
One with long dark hair who blows all the other girls out of the water. This girl makes all the other girls look like men. She's a laugh, she's smart, she's hot as hell and you'll never find another girl like her!
Wow, I agree that girl is hot but she's no Siobhan!

by Lolitabambina September 01, 2008
A girl with the most amazing eyes. She is curvy and has a figure the girls would die for and boys go head over heals for, she has thick thighs a thin waist but the biggest boobs and batty ive ever seen :O All Siobhan's have amazing personalities in which you can talk to days on end with out getting bored. And she lights up a room when she walks in. A girl of good character, trustworthy and a person you'll never forget. BUT so damn hard to get
Guy 1: Just talked to Siobhan, i think im in love with her.

Guy 2: Ah who isnt, but dream on she is way to hard to get.
by oohhhlalala August 15, 2011
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