"big sleep" meaning in English

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  "etymology_text": "Apparently coined by novelist Raymond Chandler, author of The Big Sleep (1939).",
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          "ref": "1939, Raymond Chandler, The Big Sleep, Penguin, published 2011, page 250",
          "text": "What did it matter where you lay once you were dead? In a dirty sump or in a marble tower on top of a high hill? You were dead, you were sleeping the big sleep, you were not bothered by things like that.",
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          "ref": "1967, “When the Music’s Over”, in Strange Days, performed by The Doors",
          "text": "Before I sink into the big sleep / I want to hear / The scream of the butterfly",
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          "code": "fi",
          "lang": "Finnish",
          "sense": "type of sleep used as euphemism for death",
          "word": "ikiuni"
        }
      ],
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        "The Big Sleep"
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  "word": "big sleep"
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  "word": "big sleep"
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