Spike ( poker )

1) Nail (Mark a card, often with a fingernail. Also called spur.).
2) In (usually) hold 'em, catch on the board precisely the card needed to match your hand, usually the third to your pair, sometimes another of the same rank; always followed by the card in question. "I was betting my two pair all the way, and he spiked another deuce on the river."
3) An ace.