What is the meaning of Vendetta?

Revenge.

A bitter, destructive feud, normally between two families, clans, or factions, in which each injury or slaying is revenged: a blood feud.

(often preceded by personal) A motivational grudge against a person or faction, which may or may not be reciprocated; the state of having it in for someone.

Alternative form of vindetta

blood feud, vendetta

revenge, vengeance

revenge, vengeance

Source: wiktionary.org