"-1" meaning in Chinese

{
  "head_templates": [
    {
      "args": {},
      "expansion": "-1",
      "name": "zh-verb"
    }
  ],
  "lang": "Chinese",
  "lang_code": "zh",
  "pos": "verb",
  "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"
        }
      ],
      "examples": [
        {
          "english": "One person in 2ch disappeared.",
          "roman": "2ch jiǎnyī",
          "text": "2ch-1",
          "type": "example"
        }
      ],
      "glosses": [
        "Used to indicate that one member of a group (or Internet forum, etc.) has disappeared."
      ],
      "id": "en--1-zh-verb-Yjk2s4Hl",
      "links": [
        [
          "Internet",
          "Internet"
        ],
        [
          "slang",
          "slang"
        ]
      ],
      "raw_glosses": [
        "(Internet slang) Used to indicate that one member of a group (or Internet forum, etc.) has disappeared."
      ],
      "synonyms": [
        {
          "word": "減一"
        },
        {
          "word": "減1"
        }
      ],
      "tags": [
        "Internet"
      ]
    }
  ],
  "sounds": [
    {
      "tags": [
        "Mandarin",
        "Pinyin"
      ],
      "zh-pron": "jiǎnyī"
    },
    {
      "tags": [
        "Mandarin",
        "bopomofo"
      ],
      "zh-pron": "ㄐㄧㄢˇ ㄧ"
    },
    {
      "tags": [
        "Hanyu-Pinyin",
        "Mandarin"
      ],
      "zh-pron": "jiǎnyī"
    },
    {
      "tags": [
        "Mandarin",
        "Tongyong-Pinyin"
      ],
      "zh-pron": "jiǎnyi"
    },
    {
      "tags": [
        "Mandarin",
        "Wade-Giles"
      ],
      "zh-pron": "chien³-i¹"
    },
    {
      "tags": [
        "Mandarin",
        "Yale"
      ],
      "zh-pron": "jyǎn-yī"
    },
    {
      "tags": [
        "Gwoyeu-Romatsyh",
        "Mandarin"
      ],
      "zh-pron": "jeani"
    },
    {
      "tags": [
        "Mandarin",
        "Palladius"
      ],
      "zh-pron": "цзяньи"
    },
    {
      "tags": [
        "Mandarin",
        "Palladius"
      ],
      "zh-pron": "czjanʹi"
    },
    {
      "ipa": "/t͡ɕi̯ɛn²¹⁴⁻²¹ i⁵⁵/",
      "tags": [
        "Mandarin",
        "Sinological-IPA"
      ]
    },
    {
      "ipa": "/t͡ɕi̯ɛn²¹⁴⁻²¹ i⁵⁵/"
    }
  ],
  "word": "-1"
}

{
  "head_templates": [
    {
      "args": {},
      "expansion": "-1",
      "name": "zh-verb"
    }
  ],
  "lang": "Chinese",
  "lang_code": "zh",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "Chinese entries with incorrect language header",
        "Chinese internet slang",
        "Chinese lemmas",
        "Chinese terms with IPA pronunciation",
        "Chinese terms written in foreign scripts",
        "Chinese verbs",
        "Mandarin lemmas",
        "Mandarin terms with usage examples",
        "Mandarin verbs"
      ],
      "examples": [
        {
          "english": "One person in 2ch disappeared.",
          "roman": "2ch jiǎnyī",
          "text": "2ch-1",
          "type": "example"
        }
      ],
      "glosses": [
        "Used to indicate that one member of a group (or Internet forum, etc.) has disappeared."
      ],
      "links": [
        [
          "Internet",
          "Internet"
        ],
        [
          "slang",
          "slang"
        ]
      ],
      "raw_glosses": [
        "(Internet slang) Used to indicate that one member of a group (or Internet forum, etc.) has disappeared."
      ],
      "tags": [
        "Internet"
      ]
    }
  ],
  "sounds": [
    {
      "tags": [
        "Mandarin",
        "Pinyin"
      ],
      "zh-pron": "jiǎnyī"
    },
    {
      "tags": [
        "Mandarin",
        "bopomofo"
      ],
      "zh-pron": "ㄐㄧㄢˇ ㄧ"
    },
    {
      "tags": [
        "Hanyu-Pinyin",
        "Mandarin"
      ],
      "zh-pron": "jiǎnyī"
    },
    {
      "tags": [
        "Mandarin",
        "Tongyong-Pinyin"
      ],
      "zh-pron": "jiǎnyi"
    },
    {
      "tags": [
        "Mandarin",
        "Wade-Giles"
      ],
      "zh-pron": "chien³-i¹"
    },
    {
      "tags": [
        "Mandarin",
        "Yale"
      ],
      "zh-pron": "jyǎn-yī"
    },
    {
      "tags": [
        "Gwoyeu-Romatsyh",
        "Mandarin"
      ],
      "zh-pron": "jeani"
    },
    {
      "tags": [
        "Mandarin",
        "Palladius"
      ],
      "zh-pron": "цзяньи"
    },
    {
      "tags": [
        "Mandarin",
        "Palladius"
      ],
      "zh-pron": "czjanʹi"
    },
    {
      "ipa": "/t͡ɕi̯ɛn²¹⁴⁻²¹ i⁵⁵/",
      "tags": [
        "Mandarin",
        "Sinological-IPA"
      ]
    },
    {
      "ipa": "/t͡ɕi̯ɛn²¹⁴⁻²¹ i⁵⁵/"
    }
  ],
  "synonyms": [
    {
      "word": "減一"
    },
    {
      "word": "減1"
    }
  ],
  "word": "-1"
}