"low back merger" meaning in English

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      "form": "low back mergers",
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        "plural"
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      "expansion": "low back merger (plural low back mergers)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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      "examples": [
        {
          "ref": "1994, William Labov, Principles of Linguistic Change, volume 3",
          "text": "The low back merger is one possible outcome of a series of triggering events outlined in Chapter 5, but it is itself the triggering event for a variety of further consequences for the English vowel system.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "The cot-caught merger."
      ],
      "id": "en-low_back_merger-en-noun-nrUsbpp7",
      "links": [
        [
          "phonology",
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        [
          "cot-caught merger",
          "cot-caught merger"
        ]
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        "(phonology) The cot-caught merger."
      ],
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        "human-sciences",
        "linguistics",
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        "sciences"
      ],
      "wikipedia": [
        "low back merger"
      ]
    }
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  "word": "low back merger"
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      "form": "low back mergers",
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        "(phonology) The cot-caught merger."
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  "word": "low back merger"
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