Both a verb and a noun.

Verb- to flirt. Putting in effort to try to win a girl over.

The noun is 'one who garries'. A guy who is very flirtatious with girls.
Also, 'garry' can be used for the abstract noun meaning 'flirtatious energy' (perhaps synonymous with 'mojo'), ie. "My garry has been a bit weak lately".

The term garry is thought to originate in an advertisement on Australian TV in the early 2000s, for a flavoured milk, apparently called Garry Milk. In the ad, the milk was so good, it would flirt with girls. Something like that. School students in Melbourne north-eastern suburbs adopted the use of 'garry' from this source.

The other theory is that the term 'Garry Groundwork' has been used in certain social circles around Melbourne for years, with the female counterpart 'Fiona Footwork', both meaning someone who is putting in effort to win someone's heart. It's possible that the milk ad was written with these terms in mind.
I'm going to put in so much garry with her today.

He's been garrying with her a lot lately.

He's such a garry.

My garry has been a bit weak lately.
by snozrap October 8, 2006
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Garry Newman (@garrynewman on Twitter), is an original & key developer for a number of games for Facepunch studios. One of his more commonly known games "Rust" is his primary release for his artistic version of trolling in which he allows players to build up bases, hopes & dreams before crushing them all on a routine server wipe schedule. Whether animals, exploits, or hackers prepare your anus as you will inevitably be cucked.
1. Fucking Garry.
2. What the fuck Garry?!?
3. Good idea Garry! (Used as sarcasm in this sentence)
4. I was Garry'd. (Used as an adjective describing an event.)
by firstHIT July 15, 2017
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Slang from Merseyside area for an extasy tablet, come from the footballer garry ablet which ryhmes with tablet.
"Ay lad im takin a garry and goin ravin tonight"
by joe_red August 31, 2006
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A Garris is a wild and crazy man with a ponytail who loves 80's heavy metal and is good with dogs. A Garris likes to pretend to live in the 80's.
Johnny has been watching 80's movies all day! He is such a Garris!
by mrscls December 11, 2013
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That one guy who is ugly and doesn't have much friends but is funny.
"He is such a Garry"
by Grand Boi February 13, 2018
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A Garry is someone who Thinks hes a alpha but has a crippling nicotine addiction garrys are often referred to as the alpha chads by the “Alex priests” garrys usually like to bully there pet bijoy or make them play fetch with illicit drugs in the school bathrooms. A Garry is someoje who doesn’t understand common boundaries often over stepping a line he thinks doesn’t exist he’s often followed around by a Crew of kids known as 30 not sure what it means but I’m sure you find out. As for a Garry you can’t want to be or become 1 but if you are born a Garry you are a Garry
Dude watch out garrys coming over he’s going to send his bijoy to sell us Drugs again!
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Modern common London rhyming slang. Short for garry glitter which rhymes with shitter. The arsehole, the bum, the rectum.
She was getting a severe portion right up the garry.
by England phi beta gamma March 24, 2008
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