a
: to refuse to serve (a customer)
"Beer here, barkeep," he said. "You're eighty-sixed," Lucy said. "Cut off. No more for you."
b
: to eject or ban (a customer)
The club's bouncers eighty-sixed her.
broadly : to eject, dismiss, or remove (someone)
He was eighty-sixed from Twitter following outrage from other users …