1. Someone who causes the death of a person or animal
   "The dragon killer became a hero in the village";
   - slayer
    
2. The causal agent resulting in death
   "heart disease is the biggest killer in the United States";
   - cause of death
    
3. Predatory black-and-white toothed whale with large dorsal fin; common in cold seas
   "A pod of killer whales surrounded the ice floe";
   - killer whale, orca, grampus, sea wolf, Orcinus orca
    
4. A difficulty that is hard to deal with
   "that exam was a real killer"
    
5. [informal] An outstanding example of its kind
   "his roses were killers";
   - beauty, beaut [informal], cracker [Brit, informal], knockout [informal], lulu [informal], blinder [Brit, informal]

Derived forms: killers

Type of: actor, causal agency, causal agent, cause, difficultness, difficulty, doer, dolphin, example, exemplar, good example, model, worker

Part of: genus Orcinus, Orcinus

Encyclopedia: Killer, Germany