by Rimmy rims September 26, 2010

Gillian is a pretty girl who all the boys liked in high school she is extremely smart and funny she’s got the best dance moves and knows how to make everyone laugh everyone loves her
by Elona160 October 9, 2018

a gossiping valley girl; pathetic in every way; with the suffix spiers, a lesbian; in referance to boys, a flamboyant and obsessive video-game player
You're such a gillian!
by Ron Deward January 12, 2008

A fake friend, hoe, and disappointing. She has attractive features, but the more you get to know them, they become more snake-like.
by Bitchfacemcgee178 February 14, 2020

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”
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.
by Craze bill July 22, 2019
