"O-1" meaning in Chinese

{
  "etymology_templates": [
    {
      "args": {
        "1": "zh",
        "2": "en",
        "3": "O1"
      },
      "expansion": "English O1",
      "name": "bor"
    }
  ],
  "etymology_text": "From English O1 + minus sign.",
  "head_templates": [
    {
      "args": {
        "1": "zh",
        "2": "adjective"
      },
      "expansion": "O-1",
      "name": "head"
    }
  ],
  "lang": "Chinese",
  "lang_code": "zh",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Chinese entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Hong Kong Cantonese",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "zh",
          "name": "LGBTQ",
          "orig": "zh:LGBTQ",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "in their first homosexual relationship"
      ],
      "id": "en-O-1-zh-adj-guQ45v91",
      "raw_glosses": [
        "(Hong Kong Cantonese, slang) in their first homosexual relationship"
      ],
      "related": [
        {
          "word": "A0"
        },
        {
          "word": "O1"
        }
      ],
      "tags": [
        "Cantonese",
        "Hong-Kong",
        "slang"
      ]
    }
  ],
  "word": "O-1"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "zh",
        "2": "en",
        "3": "O1"
      },
      "expansion": "English O1",
      "name": "bor"
    }
  ],
  "etymology_text": "From English O1 + minus sign.",
  "head_templates": [
    {
      "args": {
        "1": "zh",
        "2": "adjective"
      },
      "expansion": "O-1",
      "name": "head"
    }
  ],
  "lang": "Chinese",
  "lang_code": "zh",
  "pos": "adj",
  "related": [
    {
      "word": "A0"
    },
    {
      "word": "O1"
    }
  ],
  "senses": [
    {
      "categories": [
        "Chinese adjectives",
        "Chinese entries with incorrect language header",
        "Chinese lemmas",
        "Chinese slang",
        "Chinese terms borrowed from English",
        "Chinese terms derived from English",
        "Hong Kong Cantonese",
        "Pages with 1 entry",
        "Pages with entries",
        "zh:LGBTQ"
      ],
      "glosses": [
        "in their first homosexual relationship"
      ],
      "raw_glosses": [
        "(Hong Kong Cantonese, slang) in their first homosexual relationship"
      ],
      "tags": [
        "Cantonese",
        "Hong-Kong",
        "slang"
      ]
    }
  ],
  "word": "O-1"
}