"time's up" meaning in English

{
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        "head": "time's up"
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      "expansion": "time's up",
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  "lang": "English",
  "lang_code": "en",
  "pos": "phrase",
  "senses": [
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      "categories": [
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          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
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          "langcode": "en",
          "name": "Time",
          "orig": "en:Time",
          "parents": [
            "All topics",
            "Fundamental"
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      "examples": [
        {
          "ref": "2008, Rick Lax, Lawyer Boy, St. Martin’s Press, page 28:",
          "text": "“Time’s up,” the proctor announced at the end of the third section. “Put your pencils down. There will be a fifteen minute break. You are encouraged to use the bathroom during this time.”",
          "type": "quote"
        }
      ],
      "glosses": [
        "The deadline has passed; there is no more available time."
      ],
      "id": "en-time's_up-en-phrase-22KWASZS",
      "links": [
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          "deadline",
          "deadline"
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        [
          "passed",
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        [
          "available",
          "available"
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        [
          "time",
          "time"
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      "synonyms": [
        {
          "word": "time is up"
        }
      ],
      "translations": [
        {
          "code": "de",
          "lang": "German",
          "sense": "Translations",
          "word": "die Zeit ist um"
        }
      ]
    }
  ],
  "sounds": [
    {
      "other": "/ˈtaɪmz ˌʌp/"
    }
  ],
  "word": "time's up"
}

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  "lang_code": "en",
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        {
          "ref": "2008, Rick Lax, Lawyer Boy, St. Martin’s Press, page 28:",
          "text": "“Time’s up,” the proctor announced at the end of the third section. “Put your pencils down. There will be a fifteen minute break. You are encouraged to use the bathroom during this time.”",
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        "The deadline has passed; there is no more available time."
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    {
      "other": "/ˈtaɪmz ˌʌp/"
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  "synonyms": [
    {
      "word": "time is up"
    }
  ],
  "translations": [
    {
      "code": "de",
      "lang": "German",
      "sense": "Translations",
      "word": "die Zeit ist um"
    }
  ],
  "word": "time's up"
}