Green’s Dictionary of Slang

angie n.

1. (drugs, also angi) cocaine.

1927		Burrowa News (NSW) 24 June 7/4: ‘Angie,’ is the vernacular expression for ‘angel’s food,’ or ‘coke,’ which is cocaine. Taken in the powder form, one packet usually contains enough for four ‘sniffs,’ and costs 10/-.
1928		Truth (Brisbane) 1 Jan. 18/2: The inhabitants speak a universal language of slang [...] dope or cocaine becomes ‘angi’ in tho torrid hovels of Spring Hill.
1932		Sun. Mail (Brisbane) 13 Nov. 20/7: ‘Joe was buckled last night. He was all keyed up with angie and tried to take a twist out of a demon, he dug his heels in and it took three of them to lumber him.’ [...] Joe was under the influence of cocaine. He used insulting language to a detective, and resisted so violently when placed under arrest that it took the detective and two other officers to remove him to the watch house.
2001		Newark Advocate (OH) 21 Oct. 5/3: Cocaine — Angie.
2009		‘What Police Must Learn’ in Dly Teleg. 8 Nov. 🌐 angie — cocaine.

2. (US gay) a general form of address.

1972

B. Rodgers Queens’ Vernacular.

In compounds

angie-dropper (n.)

(Aus. drugs) a cocaine dealer.

1932

Sun. Mail (Brisbane) 13 Nov. 20/7: Cocaine peddlers are termed ‘angie-droppers’ amongst the elect, or less frequently ‘coke-droppers’ .

In phrases

angied-up (adj.)

(Aus. drugs) under the influence of cocaine.

1932

Sun. Mail (Brisbane) 13 Nov. 20/7: A confirmed cocaine addict is known as ‘a fence for the coke,’ and when he is under the influence of the drug he is referred, to as being ‘angied-up’ .