"os" meaning in White Hmong

{
  "etymology_number": 1,
  "etymology_templates": [
    {
      "args": {
        "1": "mww",
        "2": "hmx-pro",
        "3": "*ʔap",
        "t": "duck"
      },
      "expansion": "Proto-Hmong-Mien *ʔap (“duck”)",
      "name": "inh"
    },
    {
      "args": {
        "1": "mww",
        "2": "ltc",
        "3": "-",
        "nocap": "1"
      },
      "expansion": "borrowed from Middle Chinese",
      "name": "bor+"
    },
    {
      "args": {
        "1": "鴨",
        "2": "duck"
      },
      "expansion": "鴨 (MC 'aep, “duck”)",
      "name": "ltc-l"
    }
  ],
  "etymology_text": "From Proto-Hmong-Mien *ʔap (“duck”), borrowed from Middle Chinese 鴨 (MC 'aep, “duck”).",
  "forms": [
    {
      "form": "tus",
      "tags": [
        "classifier"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "mww",
        "2": "noun"
      },
      "expansion": "os",
      "name": "head"
    }
  ],
  "lang": "White Hmong",
  "lang_code": "mww",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "a duck"
      ],
      "id": "en-os-mww-noun-YNAhG6OK",
      "links": [
        [
          "duck",
          "duck"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ʔɒ˩/"
    }
  ],
  "word": "os"
}

{
  "etymology_number": 2,
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "eh"
      },
      "expansion": "English eh",
      "name": "ncog"
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "mww",
        "2": "interj"
      },
      "expansion": "os",
      "name": "head"
    }
  ],
  "lang": "White Hmong",
  "lang_code": "mww",
  "pos": "intj",
  "senses": [
    {
      "categories": [],
      "examples": [
        {
          "english": "Hello.",
          "text": "Nyob zoo os.",
          "type": "example"
        },
        {
          "english": "You've come.",
          "text": "Tuaj os.",
          "type": "example"
        },
        {
          "english": "Please eat.",
          "text": "Noj mov os.",
          "type": "example"
        }
      ],
      "glosses": [
        "a final emphatic particle, usually used to express sincerity"
      ],
      "id": "en-os-mww-intj-KJHMPibC"
    }
  ],
  "sounds": [
    {
      "ipa": "/ʔɒ˩/"
    }
  ],
  "word": "os"
}

{
  "categories": [
    "Pages with 39 entries",
    "Pages with entries",
    "White Hmong entries with incorrect language header",
    "White Hmong interjections",
    "White Hmong lemmas",
    "White Hmong nouns",
    "White Hmong terms borrowed from Middle Chinese",
    "White Hmong terms derived from Middle Chinese",
    "White Hmong terms derived from Proto-Hmong-Mien",
    "White Hmong terms inherited from Proto-Hmong-Mien",
    "White Hmong terms with IPA pronunciation"
  ],
  "etymology_number": 1,
  "etymology_templates": [
    {
      "args": {
        "1": "mww",
        "2": "hmx-pro",
        "3": "*ʔap",
        "t": "duck"
      },
      "expansion": "Proto-Hmong-Mien *ʔap (“duck”)",
      "name": "inh"
    },
    {
      "args": {
        "1": "mww",
        "2": "ltc",
        "3": "-",
        "nocap": "1"
      },
      "expansion": "borrowed from Middle Chinese",
      "name": "bor+"
    },
    {
      "args": {
        "1": "鴨",
        "2": "duck"
      },
      "expansion": "鴨 (MC 'aep, “duck”)",
      "name": "ltc-l"
    }
  ],
  "etymology_text": "From Proto-Hmong-Mien *ʔap (“duck”), borrowed from Middle Chinese 鴨 (MC 'aep, “duck”).",
  "forms": [
    {
      "form": "tus",
      "tags": [
        "classifier"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "mww",
        "2": "noun"
      },
      "expansion": "os",
      "name": "head"
    }
  ],
  "lang": "White Hmong",
  "lang_code": "mww",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "a duck"
      ],
      "links": [
        [
          "duck",
          "duck"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ʔɒ˩/"
    }
  ],
  "word": "os"
}

{
  "categories": [
    "Pages with 39 entries",
    "Pages with entries",
    "White Hmong entries with incorrect language header",
    "White Hmong interjections",
    "White Hmong lemmas",
    "White Hmong terms with IPA pronunciation"
  ],
  "etymology_number": 2,
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "eh"
      },
      "expansion": "English eh",
      "name": "ncog"
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "mww",
        "2": "interj"
      },
      "expansion": "os",
      "name": "head"
    }
  ],
  "lang": "White Hmong",
  "lang_code": "mww",
  "pos": "intj",
  "senses": [
    {
      "categories": [
        "White Hmong terms with usage examples"
      ],
      "examples": [
        {
          "english": "Hello.",
          "text": "Nyob zoo os.",
          "type": "example"
        },
        {
          "english": "You've come.",
          "text": "Tuaj os.",
          "type": "example"
        },
        {
          "english": "Please eat.",
          "text": "Noj mov os.",
          "type": "example"
        }
      ],
      "glosses": [
        "a final emphatic particle, usually used to express sincerity"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ʔɒ˩/"
    }
  ],
  "word": "os"
}