A girl with lots of love in her heart. She is sweet, funny, and athletic in many different ways. Her personality is the best thing about her but her looks are just a bonus. She is the most beautiful girl and friend that you can have.
You: Yo I just found a Rhiannon and she is the best!!!

*Friend*: Man your lucky dude I found a Sarah.
by Iwillneverfindlove July 22, 2017
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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 13, 2016
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Awesome friend, nice, fun, and cool
Rhiannon-Wow nice hat
by ————________ February 7, 2021
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A beautiful Welsh girl who has long, soft black hair and is playful and not shy at all. She loves to meet new people and is 100% energetic
Man Rhiannon is such a good friend.
by Chihiro Fujisaki November 12, 2020
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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 21, 2010
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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
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