Green’s Dictionary of Slang

eighty-six v.

also eight-six
[rhy. sl. = nix v. (1); orig. restaurant and bar use, indicating that the supply of an item is exhausted or that a customer is not to be served]

1. (US) to throw out, to get rid of; as n., an unwanted item.

[US]Wash. Post 1 Feb. M1: The Alcoholic Beverage Control Board eighty-sixed two Ninth st. [sic] grog centers yesterday – cut off their taps.
[US]J. Steinbeck Sweet Thursday (1955) 211: Cheeseburger coming up. Sorry, eighty-six on the tuna fish sandwiches.
[US]A. Anderson ‘Think’ in Lover Man 118: If she gets salty then I’ll be eighty-sixed too.
[US]J. Rechy City of Night 176: I’ll have you eight-sixed out of this bar so fast.
[US]R. Price Blood Brothers 48: One Saturday night [...] he eighty-sixed some punk.
L. Block Eight Million Ways to Die 87: Of course they might have forgotten by now that Jimmy had eighty-sixed me, but maybe they hadn't, and I felt myself burning already at the thought of walking in there and being refused service.
[US]J. Wambaugh Secrets of Harry Bright (1986) 10: A Mineral Springs wino named Beavertail Bigelow was 86’d from a gin mill for picking a fight.
[US]Eble Campus Sl. Fall 9: 86 – a piece of clothing that nobody wants.
[US]S. Morgan Homeboy 188: Getting eightysixed from the methadone program was every client’s nightmare.
[US]J. Stahl I, Fatty 166: Eighty-six Delmont and Rappe or the party’s over.
T. Pluck on Twitter 24 Mar. [Internet] Adam and Eve on a raft, over hard. One steak, burn it. 86 the creditors.

2. (US) to kill, murder; to execute judicially.

[US] in L.A. Times 15 Mar. I 26: At least it suggests that the police haven’t 86ed (murdered) him [HDAS].
[US]C. Stroud Close Pursuit (1988) 156: You did a nice job on that chicken hawk up in the Bronx. [...] Eighty-sixed the fucker?
[US]J. Ellroy ‘The D.A.’ in Destination: Morgue! (2004) 147: Miller 86’d Donald Keith Bashor. Miller was a self-described gas.

3. (US campus) to be finished, to be ready to leave.

[US]Eble Campus Sl. Nov.