"mother language" meaning in All languages combined

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "mother",
        "3": "language"
      },
      "expansion": "mother + language",
      "name": "com"
    }
  ],
  "etymology_text": "From mother + language.",
  "forms": [
    {
      "form": "mother languages",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "mother language (plural mother languages)",
      "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": "English entries with topic categories using raw markup",
          "parents": [
            "Entries with topic categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Languages",
          "orig": "en:Languages",
          "parents": [
            "Language",
            "Names",
            "Communication",
            "All topics",
            "Proper nouns",
            "Terms by semantic function",
            "Fundamental",
            "Nouns",
            "Lemmas"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Synonym of mother tongue"
      ],
      "id": "en-mother_language-en-noun-8QIIDnDk",
      "links": [
        [
          "mother tongue",
          "mother tongue#English"
        ]
      ],
      "synonyms": [
        {
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "mother tongue"
        }
      ]
    }
  ],
  "word": "mother language"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "mother",
        "3": "language"
      },
      "expansion": "mother + language",
      "name": "com"
    }
  ],
  "etymology_text": "From mother + language.",
  "forms": [
    {
      "form": "mother languages",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "mother language (plural mother languages)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English compound terms",
        "English countable nouns",
        "English entries with incorrect language header",
        "English entries with topic categories using raw markup",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with non-redundant non-automated sortkeys",
        "en:Languages"
      ],
      "glosses": [
        "Synonym of mother tongue"
      ],
      "links": [
        [
          "mother tongue",
          "mother tongue#English"
        ]
      ],
      "synonyms": [
        {
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "mother tongue"
        }
      ]
    }
  ],
  "word": "mother language"
}