"stress mark" meaning in English

{
  "forms": [
    {
      "form": "stress marks",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "stress mark (plural stress marks)",
      "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"
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          "source": "w"
        },
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          "langcode": "en",
          "name": "Phonetics",
          "orig": "en:Phonetics",
          "parents": [
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            "Language",
            "Social sciences",
            "Communication",
            "Sciences",
            "Society",
            "All topics",
            "Fundamental"
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          "source": "w"
        }
      ],
      "glosses": [
        "A written mark to show which part of a word should be stressed"
      ],
      "id": "en-stress_mark-en-noun-2UJLQ8AZ",
      "links": [
        [
          "phonetics",
          "phonetics"
        ],
        [
          "mark",
          "mark"
        ],
        [
          "stress",
          "stress"
        ]
      ],
      "raw_glosses": [
        "(phonetics) A written mark to show which part of a word should be stressed"
      ],
      "topics": [
        "human-sciences",
        "linguistics",
        "phonetics",
        "phonology",
        "sciences"
      ],
      "wikipedia": [
        "stress mark"
      ]
    }
  ],
  "word": "stress mark"
}

{
  "forms": [
    {
      "form": "stress marks",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "stress mark (plural stress marks)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "en:Phonetics"
      ],
      "glosses": [
        "A written mark to show which part of a word should be stressed"
      ],
      "links": [
        [
          "phonetics",
          "phonetics"
        ],
        [
          "mark",
          "mark"
        ],
        [
          "stress",
          "stress"
        ]
      ],
      "raw_glosses": [
        "(phonetics) A written mark to show which part of a word should be stressed"
      ],
      "topics": [
        "human-sciences",
        "linguistics",
        "phonetics",
        "phonology",
        "sciences"
      ],
      "wikipedia": [
        "stress mark"
      ]
    }
  ],
  "word": "stress mark"
}