"tick-tock biological clock" meaning in English

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          "ref": "2017, Catherine Ryan Howard, Distress Signals:",
          "text": "Tick-tock, biological clock. If you're a woman and you ever plan on having kids, your time to run off and have adventures and chase your dreams comes with a best-before date.",
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          "ref": "2019, Susan G. Schiff, Fertility Fuel:",
          "text": "I will break down a lot of the medical jargon and dogma that freaks you out and help you reconnect with the powerful mama you were meant to be. Let's deactivate the \"tick tock tick tock biological clock time bomb.\"",
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        "A reminder to a woman that fertility declines with age, and there is limited time to have a baby."
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        "(informal) A reminder to a woman that fertility declines with age, and there is limited time to have a baby."
      ],
      "tags": [
        "informal"
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  "word": "tick-tock biological clock"
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          "ref": "2017, Catherine Ryan Howard, Distress Signals:",
          "text": "Tick-tock, biological clock. If you're a woman and you ever plan on having kids, your time to run off and have adventures and chase your dreams comes with a best-before date.",
          "type": "quote"
        },
        {
          "ref": "2019, Susan G. Schiff, Fertility Fuel:",
          "text": "I will break down a lot of the medical jargon and dogma that freaks you out and help you reconnect with the powerful mama you were meant to be. Let's deactivate the \"tick tock tick tock biological clock time bomb.\"",
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        "A reminder to a woman that fertility declines with age, and there is limited time to have a baby."
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        "(informal) A reminder to a woman that fertility declines with age, and there is limited time to have a baby."
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