To throw out.

a number assigned to the action of having been removed and likely permanantly forbidden from a premise

this happens to you in a casino if you're caught counting cards

1. to despose of something

2. to remove someone from a building

Origin is uncertain, but the theory with the most logic behind it is that "86" began as rhyming slang code of the sort found in London's Cockney underworld of the 19th century. As "trouble and strife" meant "wife" in rhyming slang, "86" may have stood for "nix" -- "nix" meaning "nothing", "get rid of" or "to dismiss."

To get rid of something.

The term came into popular use among soldiers and veterans to describe missing soldiers as 86'd. Rather than describe buddies missing in action, it was slang to describe the MIA as violating UCMJ Sub Chapter X Article 86.

86 refers to a bar in new york, probably in manhattan though some say the bronx, that had a fire department inspection sign prohibiting more than 85 persons from occupying the bar at the same time, based on square footage. whenever a customer acted up, the bartender, would declare, "that's it, you're 86, get out or be thrown out". a few bars whose occupancy number was 85 have claimed to be the original
but proof is lacking for any particular place.

Removing or Kicking somebody out.

Orgin: 1940's? bartender slang.

bartenders use to switch 100% proof to 86% proofs after a person got drunk. cuz the loaded person couldn't tell the differnce. and when person falls asleep at the bar they would get booted out. this would help them get more customers and save up for the more stonger and costly proofs everybody wants.

now it is used to mean to get rid of something or a person (not at bars).