"mother language" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "enm",
        "3": "modir langage"
      },
      "expansion": "Middle English modir langage",
      "name": "inh"
    },
    {
      "args": {
        "1": "en",
        "2": "mother",
        "3": "language"
      },
      "expansion": "mother + language",
      "name": "com"
    }
  ],
  "etymology_text": "From Middle English modir langage, equivalent to 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": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "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"
        }
      ],
      "examples": [
        {
          "ref": "a. 1569 (date written), Roger Ascham, “[The Second Booke Teachyng the Ready Way to the Latin Tong]”, in Margaret Ascham, editor, The Scholemaster: Or Plaine and Perfite Way of Teaching Children, to Vnderstand, Write, and Speake, the Latin Tong, […], London: […] John Daye, […], published 1570, →OCLC, folio 46, recto:",
          "text": "Yet neuertheleſſe, the rudenes of common and mother tonges, is no bar foꝛ wiſe ſpeaking. Foꝛ in the rudeſt contrie, and moſt barbarous mother language, many be found can ſpeake verie wiſelie: but in the Gréeke and latin tong, the two onelie learned tonges, which be kept, not in common taulke, but in pꝛiuate bookes, we finde alwayes, wiſdome and eloquence, good matter and good vtterance, neuer oꝛ ſeldom a ſonder.",
          "type": "quote"
        }
      ],
      "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": "enm",
        "3": "modir langage"
      },
      "expansion": "Middle English modir langage",
      "name": "inh"
    },
    {
      "args": {
        "1": "en",
        "2": "mother",
        "3": "language"
      },
      "expansion": "mother + language",
      "name": "com"
    }
  ],
  "etymology_text": "From Middle English modir langage, equivalent to 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 lemmas",
        "English multiword terms",
        "English nouns",
        "English terms derived from Middle English",
        "English terms inherited from Middle English",
        "English terms with quotations",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Languages"
      ],
      "examples": [
        {
          "ref": "a. 1569 (date written), Roger Ascham, “[The Second Booke Teachyng the Ready Way to the Latin Tong]”, in Margaret Ascham, editor, The Scholemaster: Or Plaine and Perfite Way of Teaching Children, to Vnderstand, Write, and Speake, the Latin Tong, […], London: […] John Daye, […], published 1570, →OCLC, folio 46, recto:",
          "text": "Yet neuertheleſſe, the rudenes of common and mother tonges, is no bar foꝛ wiſe ſpeaking. Foꝛ in the rudeſt contrie, and moſt barbarous mother language, many be found can ſpeake verie wiſelie: but in the Gréeke and latin tong, the two onelie learned tonges, which be kept, not in common taulke, but in pꝛiuate bookes, we finde alwayes, wiſdome and eloquence, good matter and good vtterance, neuer oꝛ ſeldom a ſonder.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Synonym of mother tongue"
      ],
      "links": [
        [
          "mother tongue",
          "mother tongue#English"
        ]
      ],
      "synonyms": [
        {
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "mother tongue"
        }
      ]
    }
  ],
  "word": "mother language"
}