Definition of Ruby, Jack in English:

Ruby, Jack

Syllabification: Ru·by, Jack
Pronunciation: /ˈro͞obē
 
/
  • (1911–67), US nightclub owner; born Jack Rubenstein. On November 24, 1963, he shot and killed Lee Harvey Oswald, the man accused of murdering President Kennedy. The act was captured on national television.

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Pronunciation: kəːf
noun
a slit made by cutting with a saw