"macron below" meaning in English

{
  "forms": [
    {
      "form": "macrons below",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "macrons below"
      },
      "expansion": "macron below (plural macrons below)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Entries with translation boxes",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with French translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Diacritical marks",
          "orig": "en:Diacritical marks",
          "parents": [
            "Letters, symbols, and punctuation",
            "Symbols",
            "Orthography",
            "Writing",
            "Human behaviour",
            "Language",
            "Human",
            "Communication",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A diacritical mark whose appearance is of a macron, and is placed below the letter."
      ],
      "id": "en-macron_below-en-noun-a~9MhOty",
      "links": [
        [
          "diacritical mark",
          "diacritical mark"
        ],
        [
          "macron",
          "macron"
        ],
        [
          "below",
          "below"
        ],
        [
          "letter",
          "letter"
        ]
      ],
      "translations": [
        {
          "code": "fr",
          "lang": "French",
          "sense": "diacritical mark",
          "tags": [
            "masculine"
          ],
          "word": "macron souscrit"
        }
      ]
    }
  ],
  "word": "macron below"
}

{
  "forms": [
    {
      "form": "macrons below",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "macrons below"
      },
      "expansion": "macron below (plural macrons below)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Entries with translation boxes",
        "Pages with 1 entry",
        "Pages with entries",
        "Terms with French translations",
        "en:Diacritical marks"
      ],
      "glosses": [
        "A diacritical mark whose appearance is of a macron, and is placed below the letter."
      ],
      "links": [
        [
          "diacritical mark",
          "diacritical mark"
        ],
        [
          "macron",
          "macron"
        ],
        [
          "below",
          "below"
        ],
        [
          "letter",
          "letter"
        ]
      ]
    }
  ],
  "translations": [
    {
      "code": "fr",
      "lang": "French",
      "sense": "diacritical mark",
      "tags": [
        "masculine"
      ],
      "word": "macron souscrit"
    }
  ],
  "word": "macron below"
}