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A horrible person, You wouldn’t want to meet Gillian.
Gillian is a daft old cow.
Gillian by Kyle Maclum September 6, 2018
a girl who’s kinda whack not gonna lie, likes to dance, is the type of person to say “here is the church,here is the steepl, open the doors and there are my balls in your face”
dude I can’t believe she said that - ikr she’s such a Gillian
Gillian by cooliojulio43 January 6, 2019
A Gillian is probably going to be the dumbest, most oblivious bitch you will ever meet. She only speaks in sarcasm, even at times where she really shouldn’t. She probably isn’t that nice either.
You missed the exit! Jesus you’re being such a Gillian
Gillian by Craze bill July 22, 2019
the incorrect way of spelling "Jillian".
my sister's name is Jillian, if you spell it Gillian she will cut you.
Gillian by juliaonthemoon February 2, 2009
Gillian’s are the bitches of the world. Gillian’s will be that girls who tries to date your boyfriends despite not being that attractive. They are spoiled brats who only live off of their parents money, and they more than likely dropped out of high school. They hangout with people years younger just so someone can look up so them.

Gillian’s are not to be trusted and if you have one as a friend, drop them. Don’t waste your time
Ew that girl is so gross she looks like a Gillian”
Gillian by Tinyangryblonde_66 October 28, 2019
Gillian's spread gossip and false rumors about their "friends". She always goes behind people's backs even if they were best friends. She doesn't care which guy it is, she will flirt with any guy even if he has a girlfriend with him at the moment. Gillian's are hoes who hate when everyone else flirts and then she goes and flirts.
Person 1: Oh you're so funny! I need your help with finding a website.
Person 2: Don't be such a Gillian.
Gillian by Alanna Raine November 8, 2017