"rock steady" meaning in English

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  "lang_code": "en",
  "pos": "noun",
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        "Alternative spelling of rocksteady"
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        "(music) Alternative spelling of rocksteady"
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  "word": "rock steady"
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  "lang_code": "en",
  "pos": "noun",
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      "word": "rock-steady"
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        "(music) Alternative spelling of rocksteady"
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