WordWeb Online

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

Derived forms: killers

See also: kill

Type of: causal agency, causal agent, cause, difficulty, dolphin, example, exemplar, good example, individual, model, mortal, person, somebody, someone, soul

Part of: genus Orcinus, Orcinus

Encyclopedia: Killer Killer, the Koala