A feud arising from vengeance for a murder. See vendetta.(noun)
The Century Dictionary (Public Domain)
Use "blood-feud" in a sentence
"By the same token, Nalasu could not tell Jerry of the blood-feud with the Annos, nor of how he had lost his eyesight."
"As the lights dimmed and the flickering New York blood-feud began it was obvious this cross-section of late-night Londoners was split for a favourite as jaunty optimism and defeatist pessimism vied noisily through each successive unrelenting round of, in turn, skill, passion, bitterness, and defiant courage of shuddering intensity."
"Most locals apparently believed that the compound housed either a Pashtun family involved in a tribal blood-feud or a drug smuggling operation."