/ay"tee siks"/ , n.
1. a cardinal number, 80 plus 6.
2. a symbol for this number, as 86 or LXXXVI.
3. a set of this many persons or things.
4. Slang. a customer considered undesirable or unwelcome and refused service at a bar or restaurant.
adj.
5. amounting to 86 in number.
6. Slang. sold out; out of stock.
v.t. Slang.
7. to refuse to serve (an undesirable or unwelcome customer) at a bar or restaurant.
8. to reject; discard.
[ 1960-65, for def. 7; sense "refuse" perh. as rhyming slang for NIX 1 ]