"compound duple" meaning in English

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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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        {
          "kind": "topical",
          "langcode": "en",
          "name": "Music",
          "orig": "en:Music",
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            "Art",
            "Sound",
            "Culture",
            "Energy",
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      "glosses": [
        "A metre with two beats, each divided into three."
      ],
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        [
          "music",
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          "metre",
          "metre"
        ],
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          "beat",
          "beat"
        ],
        [
          "three",
          "three"
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      "raw_glosses": [
        "(music) A metre with two beats, each divided into three."
      ],
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      "topics": [
        "entertainment",
        "lifestyle",
        "music"
      ]
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  "word": "compound duple"
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  "lang_code": "en",
  "pos": "noun",
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      "glosses": [
        "A metre with two beats, each divided into three."
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        [
          "music",
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        [
          "metre",
          "metre"
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          "beat",
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          "three",
          "three"
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        "(music) A metre with two beats, each divided into three."
      ],
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      "topics": [
        "entertainment",
        "lifestyle",
        "music"
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  "word": "compound duple"
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