hellhound

/ˈhɛlˌhaʊnd/
noun
  1. A mythical dog that guards the underworld, often depicted as fierce and terrifying.
    • In Greek mythology, Cerberus is a three-headed hellhound that guards the gates of Hades.
    • The old legend told of a black hellhound that appeared before death.
    • The video game featured a fiery hellhound that breathed flames at its enemies.
  2. A cruel or relentless person.
    • The dictator's secret police were hellhounds who terrorized the population.
    • She called the aggressive debt collector a hellhound after he called ten times in one day.
    • The ruthless landlord was a hellhound who evicted families without warning.
Synonyms
What does "hellhound" mean? | whatsthatwordmean | whatsthatwordmean