"empty-element tag" meaning in English

{
  "forms": [
    {
      "form": "empty-element tags",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "empty-element tag (plural empty-element tags)",
      "name": "en-noun"
    }
  ],
  "hyphenations": [
    {
      "parts": [
        "emp",
        "ty-el",
        "e",
        "ment tag"
      ]
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "en",
          "name": "Computing",
          "orig": "en:Computing",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "An empty HTML/XML/SGML element, one with tag(s) but no content."
      ],
      "id": "en-empty-element_tag-en-noun-ZB3SFbDl",
      "links": [
        [
          "computing",
          "computing#Noun"
        ],
        [
          "empty",
          "empty"
        ],
        [
          "HTML",
          "HTML"
        ],
        [
          "XML",
          "XML"
        ],
        [
          "SGML",
          "SGML"
        ],
        [
          "element",
          "element"
        ],
        [
          "one",
          "one"
        ],
        [
          "tag",
          "tag"
        ],
        [
          "content",
          "content"
        ]
      ],
      "raw_glosses": [
        "(computing) An empty HTML/XML/SGML element, one with tag(s) but no content."
      ],
      "related": [
        {
          "word": "well-formed element"
        }
      ],
      "topics": [
        "computing",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "sciences"
      ]
    }
  ],
  "sounds": [
    {
      "enpr": "ĕmp′tē ĕl′ə-mənt tăg′"
    },
    {
      "ipa": "/ˈɛmp.tiː ˈɛl.ə.mənt ˌtæɡ/",
      "tags": [
        "Received-Pronunciation"
      ]
    },
    {
      "ipa": "/ˈɛmp.ti ˈɛl.ə.mənt ˌtæɡ/",
      "tags": [
        "Canada",
        "General-American"
      ]
    },
    {
      "ipa": "/ˈemp.tiː ˈel.ə.mənt ˌtæɡ/",
      "tags": [
        "General-Australian"
      ]
    },
    {
      "ipa": "/ˈemp.tiː ˈel.ə.mənt ˌtɛɡ/",
      "tags": [
        "New-Zealand"
      ]
    },
    {
      "ipa": "/ˈɛmp.ti ˈɛl.ə.mənt ˌtaɡ/",
      "tags": [
        "Scotland"
      ]
    },
    {
      "ipa": "/ˈɛmp.ʈiː ˈɛl.ɛ.mɛnʈ ˌʈaɡ/",
      "tags": [
        "India"
      ]
    }
  ],
  "word": "empty-element tag"
}

{
  "forms": [
    {
      "form": "empty-element tags",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "empty-element tag (plural empty-element tags)",
      "name": "en-noun"
    }
  ],
  "hyphenations": [
    {
      "parts": [
        "emp",
        "ty-el",
        "e",
        "ment tag"
      ]
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "well-formed element"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Computing"
      ],
      "glosses": [
        "An empty HTML/XML/SGML element, one with tag(s) but no content."
      ],
      "links": [
        [
          "computing",
          "computing#Noun"
        ],
        [
          "empty",
          "empty"
        ],
        [
          "HTML",
          "HTML"
        ],
        [
          "XML",
          "XML"
        ],
        [
          "SGML",
          "SGML"
        ],
        [
          "element",
          "element"
        ],
        [
          "one",
          "one"
        ],
        [
          "tag",
          "tag"
        ],
        [
          "content",
          "content"
        ]
      ],
      "raw_glosses": [
        "(computing) An empty HTML/XML/SGML element, one with tag(s) but no content."
      ],
      "topics": [
        "computing",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "sciences"
      ]
    }
  ],
  "sounds": [
    {
      "enpr": "ĕmp′tē ĕl′ə-mənt tăg′"
    },
    {
      "ipa": "/ˈɛmp.tiː ˈɛl.ə.mənt ˌtæɡ/",
      "tags": [
        "Received-Pronunciation"
      ]
    },
    {
      "ipa": "/ˈɛmp.ti ˈɛl.ə.mənt ˌtæɡ/",
      "tags": [
        "Canada",
        "General-American"
      ]
    },
    {
      "ipa": "/ˈemp.tiː ˈel.ə.mənt ˌtæɡ/",
      "tags": [
        "General-Australian"
      ]
    },
    {
      "ipa": "/ˈemp.tiː ˈel.ə.mənt ˌtɛɡ/",
      "tags": [
        "New-Zealand"
      ]
    },
    {
      "ipa": "/ˈɛmp.ti ˈɛl.ə.mənt ˌtaɡ/",
      "tags": [
        "Scotland"
      ]
    },
    {
      "ipa": "/ˈɛmp.ʈiː ˈɛl.ɛ.mɛnʈ ˌʈaɡ/",
      "tags": [
        "India"
      ]
    }
  ],
  "word": "empty-element tag"
}