"shot heard round the world" meaning in English

{
  "etymology_text": "From the 1837 poem Concord Hymn by Ralph Waldo Emerson.",
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "phrase"
      },
      "expansion": "shot heard round the world",
      "name": "head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "phrase",
  "senses": [
    {
      "categories": [
        {
          "_dis": "58 27 15",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "59 28 13",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "61 25 15",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "The opening volleys of the Battles of Lexington and Concord during the American Revolution."
      ],
      "id": "en-shot_heard_round_the_world-en-phrase-Kx~agrxc"
    },
    {
      "glosses": [
        "A 1951 home run by Bobby Thompson of the New York Giants"
      ],
      "id": "en-shot_heard_round_the_world-en-phrase-0TZxccY5",
      "synonyms": [
        {
          "_dis1": "30 63 7",
          "word": "shot heard 'round the world"
        }
      ]
    },
    {
      "categories": [],
      "glosses": [
        "Any cataclysmic event"
      ],
      "id": "en-shot_heard_round_the_world-en-phrase-0unjh52E",
      "raw_glosses": [
        "(idiomatic) Any cataclysmic event"
      ],
      "tags": [
        "idiomatic"
      ]
    }
  ],
  "wikipedia": [
    "Concord Hymn",
    "Ralph Waldo Emerson"
  ],
  "word": "shot heard round the world"
}

{
  "categories": [
    "English entries with incorrect language header",
    "English lemmas",
    "English multiword terms",
    "English phrases",
    "Pages with 1 entry",
    "Pages with entries"
  ],
  "etymology_text": "From the 1837 poem Concord Hymn by Ralph Waldo Emerson.",
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "phrase"
      },
      "expansion": "shot heard round the world",
      "name": "head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "phrase",
  "senses": [
    {
      "glosses": [
        "The opening volleys of the Battles of Lexington and Concord during the American Revolution."
      ]
    },
    {
      "glosses": [
        "A 1951 home run by Bobby Thompson of the New York Giants"
      ]
    },
    {
      "categories": [
        "English idioms"
      ],
      "glosses": [
        "Any cataclysmic event"
      ],
      "raw_glosses": [
        "(idiomatic) Any cataclysmic event"
      ],
      "tags": [
        "idiomatic"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "shot heard 'round the world"
    }
  ],
  "wikipedia": [
    "Concord Hymn",
    "Ralph Waldo Emerson"
  ],
  "word": "shot heard round the world"
}