"gamakO" meaning in Proto-Ryukyuan

{
  "descendants": [
    {
      "descendants": [
        {
          "lang": "Kikai",
          "lang_code": "kzg",
          "roman": "gamaku",
          "word": "がまく"
        },
        {
          "lang": "Kunigami",
          "lang_code": "xug",
          "roman": "gamāku",
          "word": "がまーく"
        },
        {
          "lang": "Northern Amami Ōshima",
          "lang_code": "ryn",
          "roman": "gamaku",
          "word": "がまく"
        },
        {
          "lang": "Okinawan",
          "lang_code": "ryu",
          "roman": "gamaku",
          "word": "がまく"
        },
        {
          "lang": "Okinoerabu",
          "lang_code": "okn",
          "roman": "gamaku",
          "word": "がまく"
        },
        {
          "lang": "Tokunoshima",
          "lang_code": "tkn",
          "roman": "gamaku",
          "word": "がまく"
        },
        {
          "lang": "Yoron",
          "lang_code": "yox",
          "roman": "gamaku",
          "word": "がまく"
        }
      ],
      "lang": "Northern Ryukyuan",
      "lang_code": "unknown"
    },
    {
      "descendants": [
        {
          "lang": "Miyako",
          "lang_code": "mvi",
          "raw_tags": [
            "borrowed",
            "uncertain"
          ],
          "roman": "gamaku",
          "word": "がまく"
        }
      ],
      "lang": "Southern Ryukyuan",
      "lang_code": "unknown"
    }
  ],
  "etymology_text": "Compare Miyazaki-Higashimorokata and Kagoshima-Kimotsuki Japanese dialects がまく (gamaku, “well fit body”).\nIn the Ryūka, attested as がまこ.",
  "head_templates": [
    {
      "args": {
        "1": "jpx-ryu-pro",
        "2": "noun"
      },
      "expansion": "*gamakO",
      "name": "head"
    }
  ],
  "lang": "Proto-Ryukyuan",
  "lang_code": "jpx-ryu-pro",
  "original_title": "Reconstruction:Proto-Ryukyuan/gamakO",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Proto-Ryukyuan entries with incorrect language header",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "the waistline; narrowest part of the waist/torso"
      ],
      "id": "en-gamakO-jpx-ryu-pro-noun-BHGquOU5",
      "links": [
        [
          "waistline",
          "waistline"
        ],
        [
          "narrowest",
          "narrow"
        ],
        [
          "waist",
          "waist"
        ],
        [
          "torso",
          "torso"
        ]
      ],
      "qualifier": "Northern Ryukyuan?",
      "raw_glosses": [
        "(Northern Ryukyuan?) the waistline; narrowest part of the waist/torso"
      ],
      "tags": [
        "reconstruction"
      ]
    }
  ],
  "word": "gamakO"
}

{
  "descendants": [
    {
      "descendants": [
        {
          "lang": "Kikai",
          "lang_code": "kzg",
          "roman": "gamaku",
          "word": "がまく"
        },
        {
          "lang": "Kunigami",
          "lang_code": "xug",
          "roman": "gamāku",
          "word": "がまーく"
        },
        {
          "lang": "Northern Amami Ōshima",
          "lang_code": "ryn",
          "roman": "gamaku",
          "word": "がまく"
        },
        {
          "lang": "Okinawan",
          "lang_code": "ryu",
          "roman": "gamaku",
          "word": "がまく"
        },
        {
          "lang": "Okinoerabu",
          "lang_code": "okn",
          "roman": "gamaku",
          "word": "がまく"
        },
        {
          "lang": "Tokunoshima",
          "lang_code": "tkn",
          "roman": "gamaku",
          "word": "がまく"
        },
        {
          "lang": "Yoron",
          "lang_code": "yox",
          "roman": "gamaku",
          "word": "がまく"
        }
      ],
      "lang": "Northern Ryukyuan",
      "lang_code": "unknown"
    },
    {
      "descendants": [
        {
          "lang": "Miyako",
          "lang_code": "mvi",
          "raw_tags": [
            "borrowed",
            "uncertain"
          ],
          "roman": "gamaku",
          "word": "がまく"
        }
      ],
      "lang": "Southern Ryukyuan",
      "lang_code": "unknown"
    }
  ],
  "etymology_text": "Compare Miyazaki-Higashimorokata and Kagoshima-Kimotsuki Japanese dialects がまく (gamaku, “well fit body”).\nIn the Ryūka, attested as がまこ.",
  "head_templates": [
    {
      "args": {
        "1": "jpx-ryu-pro",
        "2": "noun"
      },
      "expansion": "*gamakO",
      "name": "head"
    }
  ],
  "lang": "Proto-Ryukyuan",
  "lang_code": "jpx-ryu-pro",
  "original_title": "Reconstruction:Proto-Ryukyuan/gamakO",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Pages with 1 entry",
        "Pages with entries",
        "Proto-Ryukyuan entries with incorrect language header",
        "Proto-Ryukyuan lemmas",
        "Proto-Ryukyuan nouns"
      ],
      "glosses": [
        "the waistline; narrowest part of the waist/torso"
      ],
      "links": [
        [
          "waistline",
          "waistline"
        ],
        [
          "narrowest",
          "narrow"
        ],
        [
          "waist",
          "waist"
        ],
        [
          "torso",
          "torso"
        ]
      ],
      "qualifier": "Northern Ryukyuan?",
      "raw_glosses": [
        "(Northern Ryukyuan?) the waistline; narrowest part of the waist/torso"
      ],
      "tags": [
        "reconstruction"
      ]
    }
  ],
  "word": "gamakO"
}