'G'
Galah A fool; a loud; also a native Australian parrot
Game as a pebble Highly courageous
Game as a piss ant Highly courageous
Game as Ned Kelly Highly courageous
Gander -to- To have a look or peek at something eg "Take a gander at that"
Garbo A garbage collector
Gasbag -to- To talk a lot
Gastro The sickness known as gastroenteritis
Gay A trickster's victim
G'day mate Pleased to make your acquaintance
Geebung An old settler
Get down on To steal; to souvenir something
Get on someone's works To annoy; to infuriate a person
Get someone set To have a grudge against a person; to prepare to pay someone out
Get stuck into To abuse someone verbally; to fight; to tackle a task energetically

Get the run

To be dismissed from a job

Get the spear

To be dismissed from a job

Get tonked To be struck or beaten in a fight

Get wet

To lose one's temper

Getting any This expression needs some explanation. It is usually addressed by man to man and enquires whether the listener has been achieving amorous successes of late
Ghan -the- The train that runs from Adelaide to Alice Springs

Gibber

A boulder or stone

Gig

An observer; one who stares curiously; a detective; a simpleton or fool; to toss coins in two-up so that they do not spin

Gigglesuit Prison clothes
Gin An aboriginal woman; any married woman; a saddle
Ging A child's catapult
Ginger A harlot who works with another girl (sometimes with a man) to rob a client
Gip artist A professional rogue, confidence trickster
Give away To reject or abandon
Give best To acknowledge defeat or the superiority of another
Give it a go ya mug Are you perhaps incapable of performing this act
Give the game away To abandon interest in any activity or pursuit
Go for the doctor To bet everything available on a race horse in the expectation of making big money
Go -it’s a- An agreement, a settled decision
Go -to have a- To try
Go lemony at To express anger at someone
Go mulga To decamp, take to the bush
Go off When a hotel or club is raided by police for permitting after hours drinking or gambling, it is said to go off; when a horse or greyhound is "fixed" to win a race, it is said to go off
Go on I am not entirely convinced you know what you are talking about
Go through without the waterbag To be in a great hurry
Goanna A piano
Goer -it's a- It will definitely happen
Gog eye A child's catapult
Gone to Moscow Pawned
Good ink Something pleasant
Good nick -in- To be in excellent condition; to be in good health
Good oil Correct information; an accurate tip
Good on you A general term of approval, but sometimes used ironically
Good sort A girl or young woman
Goodoh A general term of approval
Goog An egg
Googly A ball in cricket which breaks from the off side; an awkward question which a person would rather not answer
Gooly A pebble or stone
Government house The homestead of a station head
Government stroke -the- A lazy method of working

Graft

Any form of work

Grazier A sheep or cattle farmer
Grease -in the- Raw wool containing its natural yolk
Green monday A type of cicada
Greengrocer A type of cicada
Griff -the- True information; a correct tip
Grog Any type of alcohol
Groper A Western Australian
Grot -a- Someone who is untidy or dirty
Grotty Dirty

Group

This industrial and political term refers to industrial groups which were formed in 1945 by the Australian Labor Party to combat Communism in Australian trade unions. They were subsequently disbanded on the ground that they had become instruments for infiltration by Catholic Action

Groupers Those who advocate the re-formation of groups or who support the principle of fighting Communism. In the late 1950s, the term was used by left wingers to describe those who still operate within the Australian Labor Party under the influence of Catholic Action
Grouse Good; excellent; terrific
Grouter A bet in two-up laid on tails after a long run of heads or vice versa
Grub -hop into the- Start eating your meal
Gulf country Country in the Gulf of Carpentaria area in North Queensland
Gully Any geographical indentation from a fair sized drain to a vast valley
Gullyraker A cattle thief; a long cattle whip

Gumleaf band

A group of musicians who make music by blowing on gumtree leaves

Gumleaves growing out of the ears -to have-

A phrase descriptive of someone, e.g. a simple minded person who has lived long in the bush or outback

Gummy Wool containing a large quantity of yolk or lanolin; a sheep which is toothless with age
Gumsucker Any person that lives in the state of Victoria
Gumtree -to have seen one's last- To be on the verge of death
Gumtree -up a- In trouble; in a quandary
Gun An expert Shearer
Gunyah A hut or shack
Gutter The space in front of a racecourse totalisator
Gutzer -to- To fall; to fail
Guyver Affectation; make believe; spurious talk