Marijuana (weed), a term evolved from the Harry Potter series for a magical plant: Gilly Weed.
Man I be jonesin' hard for some gilly!

or

Find out if anyone has any gilly we can pick up.
by Mack Millie May 1, 2010
Get the Gilly mug.
person that doesnt stop laughing
Stop being a gilly.
by soccerstud9008 February 16, 2003
Get the gilly mug.
man check that guys gilly
that gilly is huge
by carlen002 October 12, 2008
Get the Gilly mug.
Gilly: A hardcore drug abuser/tweeker. An old, run down, obvious, drug abuser of the methamphetamine type.
All night long that gilly across the street was working on his car. I think he's still going.
by Erik Murray August 25, 2008
Get the Gilly mug.
A person who sexually abuses disabled elderly men.
Grandpa's in the hospital, he got humped by a Gillies last week.
by LIgen October 11, 2012
Get the Gillies mug.
1) Sister Cabin of Binnacle
2) Your Mom in Labor
Oh, Gillies and Binnacle, they came from the same mom in labor
by supremecourtier March 9, 2005
Get the gillies mug.
Homecoming king who gets concussed and doesn't come to school for 4 weeks (perhaps more), older women love him
Is that 18 year old dating a 42 year old woman?
Yeah, he's such a Gillis.
by mnhockeyfan October 16, 2019
Get the Gillis mug.