"O1" meaning in Chinese

{
  "etymology_templates": [
    {
      "args": {
        "1": "yue",
        "2": "en",
        "3": "occupied",
        "4": "",
        "5": "in a relationship"
      },
      "expansion": "English occupied (“in a relationship”)",
      "name": "der"
    },
    {
      "args": {
        "1": "mul",
        "2": "1",
        "3": "",
        "4": "one 􂀿total partners􂁀"
      },
      "expansion": "1 (“one [total partners]”)",
      "name": "m"
    }
  ],
  "etymology_text": "From English occupied (“in a relationship”) + 1 (“one [total partners]”).",
  "head_templates": [
    {
      "args": {
        "1": "zh",
        "2": "adjective"
      },
      "expansion": "O1",
      "name": "head"
    }
  ],
  "lang": "Chinese",
  "lang_code": "zh",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Chinese entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Chinese terms written in foreign scripts",
          "parents": [
            "Terms written in foreign scripts",
            "Terms by orthographic property",
            "Terms by lexical property"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Hong Kong Cantonese",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "in one's first relationship"
      ],
      "id": "en-O1-zh-adj-ostDpfr5",
      "links": [
        [
          "relationship",
          "relationship"
        ]
      ],
      "raw_glosses": [
        "(Hong Kong Cantonese, slang) in one's first relationship"
      ],
      "related": [
        {
          "word": "A0"
        },
        {
          "word": "O-1"
        }
      ],
      "tags": [
        "Cantonese",
        "Hong-Kong",
        "slang"
      ]
    }
  ],
  "sounds": [
    {
      "tags": [
        "Cantonese",
        "Jyutping"
      ],
      "zh-pron": "ou¹ jat¹"
    },
    {
      "tags": [
        "Cantonese",
        "Yale"
      ],
      "zh-pron": "ōu yāt"
    },
    {
      "tags": [
        "Cantonese",
        "Pinyin"
      ],
      "zh-pron": "ou¹ jat⁷"
    },
    {
      "tags": [
        "Cantonese",
        "Guangdong-Romanization"
      ],
      "zh-pron": "ou¹ yed¹"
    },
    {
      "ipa": "/ou̯⁵⁵ jɐt̚⁵/",
      "tags": [
        "Cantonese",
        "Sinological-IPA"
      ]
    },
    {
      "ipa": "/ou̯⁵⁵ jɐt̚⁵/"
    }
  ],
  "word": "O1"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "yue",
        "2": "en",
        "3": "occupied",
        "4": "",
        "5": "in a relationship"
      },
      "expansion": "English occupied (“in a relationship”)",
      "name": "der"
    },
    {
      "args": {
        "1": "mul",
        "2": "1",
        "3": "",
        "4": "one 􂀿total partners􂁀"
      },
      "expansion": "1 (“one [total partners]”)",
      "name": "m"
    }
  ],
  "etymology_text": "From English occupied (“in a relationship”) + 1 (“one [total partners]”).",
  "head_templates": [
    {
      "args": {
        "1": "zh",
        "2": "adjective"
      },
      "expansion": "O1",
      "name": "head"
    }
  ],
  "lang": "Chinese",
  "lang_code": "zh",
  "pos": "adj",
  "related": [
    {
      "word": "A0"
    },
    {
      "word": "O-1"
    }
  ],
  "senses": [
    {
      "categories": [
        "Cantonese adjectives",
        "Cantonese lemmas",
        "Cantonese terms derived from English",
        "Chinese adjectives",
        "Chinese entries with incorrect language header",
        "Chinese lemmas",
        "Chinese slang",
        "Chinese terms with IPA pronunciation",
        "Chinese terms written in foreign scripts",
        "Hong Kong Cantonese"
      ],
      "glosses": [
        "in one's first relationship"
      ],
      "links": [
        [
          "relationship",
          "relationship"
        ]
      ],
      "raw_glosses": [
        "(Hong Kong Cantonese, slang) in one's first relationship"
      ],
      "tags": [
        "Cantonese",
        "Hong-Kong",
        "slang"
      ]
    }
  ],
  "sounds": [
    {
      "tags": [
        "Cantonese",
        "Jyutping"
      ],
      "zh-pron": "ou¹ jat¹"
    },
    {
      "tags": [
        "Cantonese",
        "Yale"
      ],
      "zh-pron": "ōu yāt"
    },
    {
      "tags": [
        "Cantonese",
        "Pinyin"
      ],
      "zh-pron": "ou¹ jat⁷"
    },
    {
      "tags": [
        "Cantonese",
        "Guangdong-Romanization"
      ],
      "zh-pron": "ou¹ yed¹"
    },
    {
      "ipa": "/ou̯⁵⁵ jɐt̚⁵/",
      "tags": [
        "Cantonese",
        "Sinological-IPA"
      ]
    },
    {
      "ipa": "/ou̯⁵⁵ jɐt̚⁵/"
    }
  ],
  "word": "O1"
}