hex
Definitions
A magic spell or curse; an evil charm.
To cast a spell on or bewitch someone or something.
A six-sided polygon or a hexagonal shape.
Examples
The witch cast a powerful hex on the villagers to ensure they would never leave the forest.
He felt as though a hex had been placed upon his car, given how many times it broke down this month.
The ancient book contained a detailed ritual to break the hex that had plagued the family for generations.