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10.
A strange and extremely rare group of cow/hippos that used 2 hang around with a girl that looked like she was on acid.

Or a dipsy/forgetful person
Woah ull never guess what i just saw? A flying moomin!

Claire ur such a bloody moomin!
by Denny's l'il sis September 09, 2004
 
1.
the moomins were a lovely bunch of innocent wee animals, first in book form then much later on tv
by glynhackett September 29, 2003
 
2.
The Moomins are the central characters in a series of books by Finnish writer Tove Jansson, originally published in Swedish. They are a family of Scandinavian trolls who are white, round and furry in appearance, with large snouts that make them resemble hippopotamuses. The carefree and adventurous family live in their house in Moominvalley, though in the past their residences have included a lighthouse and a theatre.

Moomintroll - the main character of most of the books, a spirited teenager with a keen sense of adventure and fun, and a generous spirit.
by little my June 12, 2006
 
3.
A person who listens to, or follows Moombahton music. Much like a junglist who follows Jungle music, etc.
'Hey dude, are you going that electro bass night this evening?'

'Nah, it will be full of Moomins'.
by JAMwIsE December 06, 2011
 
4.
A woman's breasts. Especially when large and shapely.
The girl sat at the desk opposite from me keeps shaking her moomins at me.

Look at the moomins on her!
by Fozzles August 17, 2009
 
5.
The Moomins are a bunch of tax dodging, work shy, hippo-like troll creatures from Finland. The word moomin is used to highlight or berate such people who, like the Moomins, consistantly avoid contributing to the welfare state!
"Look at that moomin getting his Giro!"

or

"I'm not giving you any 'bus-fare' you bloody moomin!"
by Fete November 08, 2005
 
6.
Someone who does something silly or can also be used as friendly abuse or a friendly name.
'You're such a moomin!'

'Oh you moomin'

'Hello moomin'
by x...princess...x July 11, 2008
 
7.
Where someones eyes are Moomin like in Photos, or videos.
"Look at the moomins on Wilson"

"Whats up with your moomins pitbull"
by Dr K Needle May 21, 2009