fill or kill

fill or kill

In stock trading, an instruction to fill an order in its entirety at once and, if that cannot be done, to cancel it. No, we have to cancel this order now—it was fill or kill.
See also: fill, kill
Farlex Dictionary of Idioms.

fill or kill

and FOK
phr. a broker’s notation advising the stock exchange to fill a stock order or kill it. (The abbreviation is an initialism. Securities markets.) Get rid of this order. It was fill or kill, and it should have been killed yesterday.
See also: fill, kill
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • FOK
  • on the order of
  • place an order
  • place an/the/(one's) order
  • in order
  • order from
  • order from (someone or something)
  • order in
  • bum check
  • pass a bum check