There are multiple definitions - click on the translation that matches your context.

danificar

verbo

full

spoil

verb

Definitions of spoil

English

to make a voting paper invalid by completing it incorrectly, often deliberately as a form of protest

I am probably going to spoil my ballot paper.

English

to reduce or destroy the use or value of something, especially by damaging it

If the branches are sucked into the hose, it will spoil the machine.