meaning killed. The Random House Historical Dictionary of Slang provides a possible explanation for the use of eighty-six in restaurants.

VOA: special.2010.01.08

I am told that it plays on a slang phrase then current, "to make a gazebo of yourself," meaning"to make a spectacle of yourself and a fool of yourself, publicly."

有人告诉我这是当时的说法,建筑楼台意思是“,当众出丑,大庭广众下出洋相“

耶鲁公开课 - 现代诗歌课程节选