"game clock" meaning in English

{
  "forms": [
    {
      "form": "game clocks",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "game clock (plural game clocks)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with topic categories using raw markup",
          "parents": [
            "Entries with topic categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Clocks",
          "orig": "en:Clocks",
          "parents": [
            "Machines",
            "Timekeeping",
            "Technology",
            "Time",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A clock used to time a game, such as a chess clock."
      ],
      "id": "en-game_clock-en-noun-vW2xhUvJ",
      "links": [
        [
          "clock",
          "clock"
        ],
        [
          "time",
          "time"
        ],
        [
          "game",
          "game"
        ],
        [
          "chess clock",
          "chess clock"
        ]
      ],
      "translations": [
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "clock used to time a game",
          "word": "pelikello"
        }
      ]
    }
  ],
  "word": "game clock"
}

{
  "forms": [
    {
      "form": "game clocks",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "game clock (plural game clocks)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English entries with topic categories using raw markup",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with non-redundant non-automated sortkeys",
        "en:Clocks"
      ],
      "glosses": [
        "A clock used to time a game, such as a chess clock."
      ],
      "links": [
        [
          "clock",
          "clock"
        ],
        [
          "time",
          "time"
        ],
        [
          "game",
          "game"
        ],
        [
          "chess clock",
          "chess clock"
        ]
      ]
    }
  ],
  "translations": [
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "clock used to time a game",
      "word": "pelikello"
    }
  ],
  "word": "game clock"
}