"modal auxiliary" meaning in English

{
  "forms": [
    {
      "form": "modal auxiliaries",
      "tags": [
        "plural"
      ]
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  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "modal auxiliary (plural modal auxiliaries)",
      "name": "en-noun"
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  "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"
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          "source": "w"
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          "source": "w"
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          "source": "w"
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          "langcode": "en",
          "name": "Grammar",
          "orig": "en:Grammar",
          "parents": [
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            "Language",
            "Social sciences",
            "Communication",
            "Sciences",
            "Society",
            "All topics",
            "Fundamental"
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          "source": "w"
        }
      ],
      "glosses": [
        "A verb used to express the mood (or tense) of another verb."
      ],
      "id": "en-modal_auxiliary-en-noun-kTViHE2N",
      "links": [
        [
          "grammar",
          "grammar"
        ],
        [
          "verb",
          "verb"
        ],
        [
          "express",
          "express"
        ],
        [
          "mood",
          "mood"
        ],
        [
          "tense",
          "tense"
        ]
      ],
      "raw_glosses": [
        "(grammar) A verb used to express the mood (or tense) of another verb."
      ],
      "related": [
        {
          "word": "modal verb"
        },
        {
          "word": "modal case"
        }
      ],
      "topics": [
        "grammar",
        "human-sciences",
        "linguistics",
        "sciences"
      ],
      "translations": [
        {
          "code": "fi",
          "lang": "Finnish",
          "word": "modaaliapuverbi"
        },
        {
          "code": "fi",
          "lang": "Finnish",
          "word": "modaalinen apuverbi"
        },
        {
          "code": "hu",
          "lang": "Hungarian",
          "word": "módbeli segédige"
        },
        {
          "code": "sv",
          "lang": "Swedish",
          "tags": [
            "neuter"
          ],
          "word": "modalt hjälpverb"
        }
      ],
      "wikipedia": [
        "modal auxiliary"
      ]
    }
  ],
  "word": "modal auxiliary"
}

{
  "forms": [
    {
      "form": "modal auxiliaries",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "modal auxiliary (plural modal auxiliaries)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "modal verb"
    },
    {
      "word": "modal case"
    }
  ],
  "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 Finnish translations",
        "Terms with Hungarian translations",
        "Terms with Swedish translations",
        "en:Grammar"
      ],
      "glosses": [
        "A verb used to express the mood (or tense) of another verb."
      ],
      "links": [
        [
          "grammar",
          "grammar"
        ],
        [
          "verb",
          "verb"
        ],
        [
          "express",
          "express"
        ],
        [
          "mood",
          "mood"
        ],
        [
          "tense",
          "tense"
        ]
      ],
      "raw_glosses": [
        "(grammar) A verb used to express the mood (or tense) of another verb."
      ],
      "topics": [
        "grammar",
        "human-sciences",
        "linguistics",
        "sciences"
      ],
      "wikipedia": [
        "modal auxiliary"
      ]
    }
  ],
  "translations": [
    {
      "code": "fi",
      "lang": "Finnish",
      "word": "modaaliapuverbi"
    },
    {
      "code": "fi",
      "lang": "Finnish",
      "word": "modaalinen apuverbi"
    },
    {
      "code": "hu",
      "lang": "Hungarian",
      "word": "módbeli segédige"
    },
    {
      "code": "sv",
      "lang": "Swedish",
      "tags": [
        "neuter"
      ],
      "word": "modalt hjälpverb"
    }
  ],
  "word": "modal auxiliary"
}

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  "msg": "UNIMPLEMENTED parse_translation_template: trans-top-see {1: 'verb used to express the mood of another verb', 2: 'modal verb'}",
  "path": [
    "modal auxiliary",
    "Template:trans-top-see",
    "TEMPLATE_FN"
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  "section": "English",
  "subsection": "noun",
  "title": "modal auxiliary",
  "trace": ""
}