"em trai" meaning in Vietnamese

{
  "etymology_templates": [
    {
      "args": {
        "1": "vi",
        "2": "em",
        "3": "trai",
        "t1": "younger sibling",
        "t2": "boy"
      },
      "expansion": "em (“younger sibling”) + trai (“boy”)",
      "name": "com"
    }
  ],
  "etymology_text": "From em (“younger sibling”) + trai (“boy”).",
  "head_templates": [
    {
      "args": {
        "1": "vi",
        "2": "noun",
        "3": "",
        "4": "",
        "head": "",
        "tr": ""
      },
      "expansion": "em trai",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "em trai",
      "name": "vi-noun"
    }
  ],
  "lang": "Vietnamese",
  "lang_code": "vi",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Vietnamese entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "vi",
          "name": "Male family members",
          "orig": "vi:Male family members",
          "parents": [
            "Family members",
            "Male people",
            "Family",
            "Male",
            "People",
            "Gender",
            "Human",
            "Biology",
            "Psychology",
            "Sociology",
            "All topics",
            "Sciences",
            "Social sciences",
            "Fundamental",
            "Society"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "younger brother"
      ],
      "id": "en-em_trai-vi-noun-aZ4o9D77",
      "links": [
        [
          "younger brother",
          "younger brother"
        ]
      ],
      "raw_glosses": [
        "(often formal and literary) younger brother"
      ],
      "synonyms": [
        {
          "word": "thằng em"
        },
        {
          "word": "đứa em"
        }
      ],
      "tags": [
        "formal",
        "literary",
        "often"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ʔɛm˧˧ t͡ɕaːj˧˧]",
      "tags": [
        "Hà-Nội"
      ]
    },
    {
      "ipa": "[ʔɛm˧˧ ʈaːj˧˧]",
      "tags": [
        "Huế"
      ]
    },
    {
      "ipa": "[ʔɛm˧˧ ʈaːj˧˧]",
      "note": "Saigon"
    }
  ],
  "word": "em trai"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "vi",
        "2": "em",
        "3": "trai",
        "t1": "younger sibling",
        "t2": "boy"
      },
      "expansion": "em (“younger sibling”) + trai (“boy”)",
      "name": "com"
    }
  ],
  "etymology_text": "From em (“younger sibling”) + trai (“boy”).",
  "head_templates": [
    {
      "args": {
        "1": "vi",
        "2": "noun",
        "3": "",
        "4": "",
        "head": "",
        "tr": ""
      },
      "expansion": "em trai",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "em trai",
      "name": "vi-noun"
    }
  ],
  "lang": "Vietnamese",
  "lang_code": "vi",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Pages with 1 entry",
        "Pages with entries",
        "Vietnamese compound terms",
        "Vietnamese entries with incorrect language header",
        "Vietnamese formal terms",
        "Vietnamese lemmas",
        "Vietnamese literary terms",
        "Vietnamese nouns",
        "Vietnamese terms with IPA pronunciation",
        "vi:Male family members"
      ],
      "glosses": [
        "younger brother"
      ],
      "links": [
        [
          "younger brother",
          "younger brother"
        ]
      ],
      "raw_glosses": [
        "(often formal and literary) younger brother"
      ],
      "synonyms": [
        {
          "word": "thằng em"
        },
        {
          "word": "đứa em"
        }
      ],
      "tags": [
        "formal",
        "literary",
        "often"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ʔɛm˧˧ t͡ɕaːj˧˧]",
      "tags": [
        "Hà-Nội"
      ]
    },
    {
      "ipa": "[ʔɛm˧˧ ʈaːj˧˧]",
      "tags": [
        "Huế"
      ]
    },
    {
      "ipa": "[ʔɛm˧˧ ʈaːj˧˧]",
      "note": "Saigon"
    }
  ],
  "word": "em trai"
}