to secretly add strong alcohol or a drug to someone's drink or food
spike something with something
The orange juice had been spiked with gin.
if the number or rate of something spikes, it increases quickly and by a large amount:
New telephone orders have spiked in the last two years.
to push a sharp tool or object into something
to prevent someone from saying something or printing something in a newspaper:
a clumsy attempt to spike rumours of a cabinet split
a) American English
to powerfully throw an American football down on the ground to celebrate a touchdown
b) [intransitive and transitive]
to powerfully hit a volleyball down over the net
6 British English
to spoil an opponent's plans