Klaatu-barada-nikto Definition
    phrase
  
 A stock science fictional phrase, typically used as a code or shibboleth. There is no actual meaning.
 Wiktionary 
Origin of Klaatu-barada-nikto
- From the 1951 film The Day the Earth Stood Still. An alien named Klaatu tells an earthwoman a code phrase for his robot Gort. See first citation. - From Wiktionary 
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