a beautiful sexy girl. normally athletic with a great body, also a really good kisser. often used to replace the word awesome.
"this band is so millie!!!!!"
by white and nerdy!!!!!!!!!! March 22, 2009
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A hot babe who gets stressed out easily. Her smile makes men go crazy but her complaining can occasionally get out of hand. She is a fun loving teen who knows how to have fun but medical problems usually get in the way.
That girl is so gorgeous, her name must be Millie.

Millie: "I have a stomach ache"
Millie is frickin amazing.
by donutluver April 14, 2012
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She is a amazing person with a great personality. Always there for you but can lie. So sweet and sassy. Great anywhere, always sticks up for you and is always
By your side wiener ever you need her. Peng
Hey did you see Milly?
Person: Yeah she’s such a great friend to me.
by Ismawesomelmao January 8, 2018
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Millie starts off as a shy girl but when you get to know her, she’s actually really funny!
Normally a skater but the innocent one in her group, but her resting face can often give off bad vibes but she’s often really happy!
Don’t get on the wrong side of her because she can be a gossip if she wants!
“Is that Millie? She’s so cute! I didn’t know she could skate!” “Yeah, she’s kinda shy though.”
by Tik.vibes June 10, 2020
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for example:My watch cost a milli or i spent a milli on her
by AL"SCARFACE"CAPONE August 7, 2019
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Usually wear short skirts up theyre arses on the coldest day of the year and will cover her leg in shit if it meant they'd look like shed been to Spain that Summer. Buys clothes from such "SHAPS" as:
1)NV
2)New Look
3)Tammy Girl
4)Exhibit
5)LifeStyle Sports
6)Miss Selfridge
7)Claire's Accessories(for all theyre fake earings,necklaces,braclets that give your skin that greeny colour)
8)JD Sports
9)Primark (only when they are on theyre own as this would prove their disloyalty to the Milly Tribe.They cut off the tags and sew on High Brand ones then sell them around doors)
10)And finally the stalls.

See Also steeks,spides,millbags and townie
This is the population of Millys(including Steeks,spides and trendies)from Belfast in percentage:

Lower Falls Road:100% Milly
Upper Falls Road:92% Milly,6%Alternative, 2%Other
Andersonstown(ANDYTOWN):88% Milly, 5% Rockers, 5% Others
WhiteRock,WestRock and Ballymurphy: 100% Milly.
Lenadoon: 99% Milly. 1% Other
Brooklands: 60% Milly. 40% Skaters
PoleGlass,Twinbrook+Lagmore:100% Milly.

As you can see, the higher u get up the road, the more various groups you meet. But once you hit Lenadoon,swap your baggy jeans for Reebok "trackies",your boots for the "LATEST NIKE AIR MAX" trainers and grab peroxide and hair gel and scramble your head about a bit. Now you fit in , and once you get to cloona change back.

One last warning when in Belfast,Always carry a Hurl.
This is the population of Millys(including Steeks,spides and trendies)from Belfast in percentage:

Lower Falls Road:100% Milly
Upper Falls Road:92% Milly,6%Alternative, 2%Other
Andersonstown(ANDYTOWN):88% Milly, 5% Rockers, 5% Others
WhiteRock,WestRock and Ballymurphy: 100% Milly.
Lenadoon: 99% Milly. 1% Other
Brooklands: 60% Milly. 40% Skaters
PoleGlass,Twinbrook+Lagmore:100% Milly.

As you can see, the higher u get up the road, the more various groups you meet. But once you hit Lenadoon,swap your baggy jeans for Reebok "trackies",your boots for the "LATEST NIKE AIR MAX" trainers and grab peroxide and hair gel and scramble your head about a bit. Now you fit in , and once you get to cloona change back.

One last warning when in Belfast,Always carry a Hurl.
by Laurlyn May 17, 2004
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A name suitable for both genders. A buff girl who loves to exercise and has an amazing ass. Is prone to sweating a lot, and likes to play sport and hunt axolotls in her spare time. Very sassy and loves food (any food).
I wish I was a cool Milly!
by Coolgurl4lyf July 25, 2014
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