Having eagerness or showing enthusiasm towards something.
"I am so gilly for a night out."
"Wow, Anna is really gilly for Alex tonight."
by annapea October 17, 2011
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An insult the equivalent of "idiot", "prat", "knobhead" etc. used in Gloucestershire, UK.
Sonny: I didn't mean to break it.
Josh: You're such a gilly!
by JoeyJoeJoington February 8, 2011
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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
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man check that guys gilly
that gilly is huge
by carlen002 October 12, 2008
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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
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Making reference to a fag, also, they take ROIDS
Person 1-Did you see Gilly today?
Person 2-Yeah I saw the fag
by Braithrussell March 31, 2019
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To describe something or someone that is or who is little and cute at the same time.
1)I saw this gilly puppy at the pet store the other day.

2)My mother made these gilly cupcakes for the kids the other day.

3)That is girl is gilly.
by KIKO November 9, 2013
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