"dear Sir" meaning in English

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      "expansion": "dear Sir",
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  "lang": "English",
  "lang_code": "en",
  "pos": "phrase",
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      "glosses": [
        "Used as the salutation at the beginning of a formal letter when addressing persons – assumed to be male – of unknown names."
      ],
      "id": "en-dear_Sir-en-phrase-plalIigE",
      "links": [
        [
          "salutation",
          "salutation#English"
        ]
      ],
      "raw_glosses": [
        "(dated) Used as the salutation at the beginning of a formal letter when addressing persons – assumed to be male – of unknown names."
      ],
      "synonyms": [
        {
          "word": "dear sir"
        },
        {
          "word": "dear Sir or Madam"
        },
        {
          "english": "if gender of addressee is unknown",
          "word": "dear Sir/Madam"
        },
        {
          "word": "dear Sirs"
        },
        {
          "english": "with multiple addressees",
          "word": "dear sirs"
        }
      ],
      "tags": [
        "dated"
      ],
      "translations": [
        {
          "code": "nl",
          "lang": "Dutch",
          "sense": "Translations",
          "tags": [
            "archaic",
            "masculine"
          ],
          "word": "weledele heer"
        },
        {
          "code": "es",
          "lang": "Spanish",
          "sense": "Translations",
          "word": "muy señor mío"
        },
        {
          "code": "es",
          "lang": "Spanish",
          "sense": "Translations",
          "word": "muy señor nuestro"
        },
        {
          "code": "vi",
          "lang": "Vietnamese",
          "roman": "kính",
          "sense": "Translations",
          "word": "thưa/gửi/gởi ông/ngài (quý/quí)"
        },
        {
          "code": "vi",
          "english": "if age of addressee is known",
          "lang": "Vietnamese",
          "sense": "Translations",
          "word": "(kính) thưa/gửi/gởi anh/em"
        }
      ]
    }
  ],
  "word": "dear Sir"
}

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      "expansion": "dear Sir",
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  "lang_code": "en",
  "pos": "phrase",
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      "glosses": [
        "Used as the salutation at the beginning of a formal letter when addressing persons – assumed to be male – of unknown names."
      ],
      "links": [
        [
          "salutation",
          "salutation#English"
        ]
      ],
      "raw_glosses": [
        "(dated) Used as the salutation at the beginning of a formal letter when addressing persons – assumed to be male – of unknown names."
      ],
      "tags": [
        "dated"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "dear sir"
    },
    {
      "word": "dear Sir or Madam"
    },
    {
      "english": "if gender of addressee is unknown",
      "word": "dear Sir/Madam"
    },
    {
      "word": "dear Sirs"
    },
    {
      "english": "with multiple addressees",
      "word": "dear sirs"
    }
  ],
  "translations": [
    {
      "code": "nl",
      "lang": "Dutch",
      "sense": "Translations",
      "tags": [
        "archaic",
        "masculine"
      ],
      "word": "weledele heer"
    },
    {
      "code": "es",
      "lang": "Spanish",
      "sense": "Translations",
      "word": "muy señor mío"
    },
    {
      "code": "es",
      "lang": "Spanish",
      "sense": "Translations",
      "word": "muy señor nuestro"
    },
    {
      "code": "vi",
      "lang": "Vietnamese",
      "roman": "kính",
      "sense": "Translations",
      "word": "thưa/gửi/gởi ông/ngài (quý/quí)"
    },
    {
      "code": "vi",
      "english": "if age of addressee is known",
      "lang": "Vietnamese",
      "sense": "Translations",
      "word": "(kính) thưa/gửi/gởi anh/em"
    }
  ],
  "word": "dear Sir"
}