female of approximately 12-17 years old, (though this can vary) who are obsessed by some sort of celebrity/group/band.
contrary to popular belief, fangirls are not always to be confused with stalkers. Can just be happy, excited (albeit somewhat pathetic) about the celebrity/group/band they are crushing on.
However then there are the dangerous fangirls, the kind that hound said celebrity/group/band and annoy the fuck out of other people with their shrieks of 'OMFG!'
Fangirls very often give a bad name for true, normal fans.
fangirl: like OMFGGG i wanna rape Gerard Way!!
normal fan: ..fucking freak.
fangirl: shutup!1!! im gonna have his babiiiess!1!!!1!!!
normal fan: *shoots fangirl in the head*

this is a very realistic example of what may happen do you ever cross paths with a horde of fangirls. Be prepared.
by wibbleformebibble May 22, 2007
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A teenage girl who is kind of obsessed with a band, footballer, singer, actor etc. They are perfectly normal girls , dont look fat or ugly and most of them are cool people. There are a few who are completely crazy and scarily obsessed but most of us are just normal people who enjoy talking about hot guys and reading fanfics about them. Yes, we use words such as glomp and squee alot and maybe we slightly overuse punctuation sometimes but its fun! And we cant help it - if you fangirl over something its actually an emotion. You just literally cant help it.
Normal Fangirl 1: OMG!!! *hyperventilates* That is officially the hottest picture ever. Guh. ♥ Spanish footballers are ♥
Normal Fangirl 2: *also hyperventilates* Agreed, that is definately THE hottest picture ever. <s>apart from maybe the Stevie/Xabi kiss</s> XD And yeah, spanish guys are gorgeous.

Crazy Obsessed Fangirl: OMG!! Thats my husband!!! I married him last week and I love him so much and I would die without him!!! OMG!!!!!!!!!!!!!!!!!!!!!!!
Normal Fangirl: Okay... But yeah he is really hot =
Crazy Obsessed Fangirl: OMG you Bitch!!! Hands off my husband!!!! Im gonna come and murder you if you ever talk about him again!!!!!! Evil Bitch!!!!!!!! I know hes hot thats why I married him!!!!!! Now fuck off and leave me alone with my husband!!!!!
by self-confessed fangirl February 7, 2007
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Usually a girl between the ages of 10-20 you have an unnatural obsession with an anime character, video game character, singer, celebrity, ect. They are likely to squee, glomp, or huggle their said obsession.
Vergil Fangirl and proud!
Fangirl 1: Vergil from Devil May Cry 3 is SOOOO teh smex!
Fangirl 2: No! It's all about Nero!
Fangirl 3: They both suck! Vergil is friggin evil, andd Nero just replaced Dante! Dante is the GREATEST!
Fangirl 1&2: *jump Fangirl 3*
A typical Devil May Cry fangirl argument.
by Vergilsdarkqueen666 June 28, 2009
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Female fan of a movie, TV show, book, or other medium;
usually a hard core fan of a particular character or ship which they will usually refer to as their OTP or 'one true pairing';
often found on blogs, squeeing over canon relationships, non-canon relationships, UST, or even AU plots or crack dealing with their fandom;
often found reading or writing fanfic;
can be supporters of het pairings, slash pairings, femslash pairings, or OT3s;
often spend time collecting pictures and making fanart;
often are also involved in vidding or making fan music videos (see also fanvid, vid).
I try to closet my inner fangirl in public, but sometimes I can't help but let it SQUEE!

I'm so excited for the convention! It's going to be a whole room full of fangirls on overdrive.

"OMG seriously, who needs alternative energy? Just hook up A/R fangirls to some kind of battery and we can power the whole planet for as long as we get new A/R promo pics."
by slave4roslin May 4, 2008
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A girl who uselly is about 10-18, who obsesses over something. Normally, it's a celebrity, band, or anime charecter. There are three stages of fangirl.

Stage 1: Normal
Normal fangirls are the sanest of the fangirls. They tend to like things because of the quality of the music, animation, and so on.When it's anime, they watch it because they like the story. When it's music, they listen to it, because they love the music

Stage 2: Slightly obsessive
These fangirls are quite tolarable, because they arn't completly obsessed. When it's anime, they tend to like the story, but they also think one of the characters is hot. When it's music, they tend to know about an album of songs, but they may like it, because the singers hot.

Stage 3: Absolutly crazy
These fangirls are pretty annoying if you know one.
They tend to lurk around anime conventions and they leap out on somebody who is dressed as their favorite charecter.
When it comes to music, they probably don't know more then one song of the band, because they just think one of the members is hot, and they tend to believe that they are gonna marry them someday.
Normal fangirl:"I love the band My Chemical Romance. Their music is just amazing and really inspiring"

Slightly obsessive:"I love the band My Chemical Romance. Their music is awesome, and Gerard Way is so hot :)"

Crazy fangirl: "I LOVE THE BAND MY CHEMICAL ROMANCE!!! GERARD WAY IS SO HAWT!!!! I KNOW I'M GONNA MARRY HIM ONE DAY!"
by She'sNotOkay June 13, 2010
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There are several versions of the word:
1. a female fan who is sickeningly, overly-obsessed with someone/something (esp. related to geekdom and anime). Said fangirl also tends to write fanfiction

This definition is one sided since "fanboy" means "A passionate fan of various elements of geek culture (e.g. sci-fi, comics, Star Wars, video games, anime, hobbits, Magic: the Gathering, etc.), but who lets his passion override social graces." - Paul Horn

2. A passionate fan of various elements of geek culture (e.g. sci-fi, comics, Star Wars, video games, anime, hobbits, Magic: the Gathering, etc.), but who lets her passion override social graces.

This is a more balanced term that makes more sense to use
1)Fangirl: OMG! NaruSasu ftw ^_^

2)Fangirl: Every game Valve has ever released has been awesome! Sega can die in a hole! >:O
by TusMadres May 29, 2010
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A fangirl is mostly described as a woman between the ages of 14-17 with an overobsession for something that is not real, is real (but is unlikely possible to hook up with him), or maybe even both things of the matter. Most of them screams words such as "OMG, HE IS SO HOT" or "HE IS SUPER CUTE BEYOND BELIEF! MARRY ME BABY!"

Not all fangirls are as awful as the ones of the rabid fangirl. Some fangirls can be actually be QUITE smart and cute, and sometimes can even control their extreme OBSESSION for the person of their affection. Most of the times, I am alright with these kind of fangirls.

Also, rabid fangirls tend to also hate the person that is around the person they obsess over.
A fangirl spots Winry (of FMA) trying to fix Edward's (also from FMA) automail:

Fangirl: Ah, that's so cute! <3 You to keep working!
Ed: Oo;
Winry: Okay... *looks ver confused*

On the contrary, RABID FANGIRLS:

Rabid fangirl: GAAAAAAAAAAAAAAAAAAAH!!!! YOU STUPID BICH!!! SLUT GET AWAY FRUM MY MAN!!! EDO IS MINE!!!!!!!!!!!!!! MOVE IT!!!!11111
by Fuyu Tenshi November 4, 2006
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