spike

US /spaɪk/
UK /spaɪk/
1.

paku

a thin, pointed piece of metal, wood, or another rigid material.

2.

paku

a sharp increase in the magnitude or concentration of something.

:
the oil price spike
1.

paku

impale on or pierce with a sharp point.

:
she spiked another oyster
2.

paku

form into or cover with sharp points.

:
his hair was matted and spiked with blood