noun

• (forestry) A concentration of surface wood or fuel.
  "a juniper jackpot"
• (pinball) A large accumulated point bonus, originally awarded after a long set of actions but now often easily available in multiball modes.

verb

• (intransitive) Of a slot machine, to issue a jackpot.
  "I went into the Las Vegas Casino and played $20 in a nickel slot, and it jackpotted for $300."
• (transitive, crime, uncommon) To fraudulently exploit an automatic teller machine so that it dispenses cash that has not been withdrawn from an account.

name

• (playground games) A ball game in which a thrower calls out a point value and whether the ball must be caught "alive" (in the air) or "dead" (having touched the ground), and a group of catchers compete to catch the ball.
  "As a little girl, I was something of a tomboy. I played jackpot in the mud at recess, and my Christmas wish lists consisted of baseball mitts and remote controlled cars."

noun

• (Western US) A difficult situation.
  "and if you are not next to the ways and customs, the first thing you know you are in a jackpot so big four one spots would not be openers. I don't know what that last expression means, but I heard a fellow use it, and he was talking about a fellow that was in a very bad fix."