Really hot girl with curly hair. Unique in her own way. Her parents probably love Fleetwood Mac.
"What is ringing like a bell through the night?"
"Oh, that's just Rhiannon."

"Look at that cat in the dark!"
"Seriously, dude? That's still Rhiannon."

"Wow! I've never seen a woman taken by the wind!"
"That's Rhiannon - will you ever win?"
by hamiltonsbabe October 28, 2014

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Rhiannon is the most beautiful lady ever. She will pull you in and you won't know it till it's too late. She usually has brown eyes and dirty blonde hair. She has a sexy body beautiful face. One of the ways she will pull you in is by her eyes. You could have known her for 3 years and never liked her, but the moment you look straight into her eyes you will become hypnotized and never snap out of it. Many times if you fall under her spell you will always think about her and even have dreams about her. You would give the world for only one kiss.
Josh: I love Rhiannon. I would give the world for just one kiss.

Sam: Looks like she pulled you in too.

Josh: Yea she did but I am glad that she did.
by Venomcore June 07, 2016

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The Urban Dictionary T-Shirt

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A smoking hot girl with an amazing body. She has long legs and great boobs. She can sometimes be a bitch but that's okay cause she has nice boobs.
"Holy shit did you see that sexy girl?"
"Yeah she must be a Rhiannon."
by theguywiththebigd June 12, 2016

The Urban Dictionary Mug

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Lotsa space for your liquids.

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Your favorite word on a white mug.

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The Urban Dictionary T-Shirt

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Means the most sweetest person in the world but still buff

She is also scared to disappoint and say no to people.
1:should I ask her out
2:yeah
1:I'm scared she will say. No
2::don't worry she's a Rhiannon
by Sophsophbuff March 10, 2016

The Urban Dictionary Mug

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To sugar one's anus, either in a hair-removal capacity or as a foreplay activity.
I'm so glad I got a Rhiannon done on my undercarriage before my big date." Or, "My new girlfriend is really into food play. One more Rhiannon and I'm going to develop diabetes for sure.
by darkdrift September 20, 2010

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Lotsa space for your liquids.

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Rhiannon is a friend to two extremely cool people. She is very kind, pretty, funny, outgoing and sexay. She is also a good horse rider but smells of digested cheese.
Person 1: 'Hey look, its Rhiannon!'
Person 2: ' I know, I can smell her from here!'
by FoxyDog August 20, 2010

The Urban Dictionary Mug

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Lotsa space for your liquids.

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The Urban Dictionary T-Shirt

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She is a cow that nobody likes

She can be an asshole at times
She might be nice to begin with then when you get to know her she turns moody .
Is often ginger, which is why she is a hot head that goes mad all the time.
She must be a Rhiannon
by Louisebrown2k9 December 04, 2010

The Urban Dictionary Mug

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The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Your favorite word on a white mug.

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The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

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The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

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The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt