"serial key" meaning in English

{
  "forms": [
    {
      "form": "serial keys",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "serial key (plural serial keys)",
      "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": "Computing",
          "orig": "en:Computing",
          "parents": [
            "Technology",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Copyright",
          "orig": "en:Copyright",
          "parents": [
            "Intellectual property",
            "Law",
            "Justice",
            "Society",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A string of characters or equivalent access code that must be input into a program in order to activate it."
      ],
      "id": "en-serial_key-en-noun-BnW-wNbh",
      "links": [
        [
          "computing",
          "computing#Noun"
        ],
        [
          "string",
          "string"
        ],
        [
          "character",
          "character"
        ],
        [
          "input",
          "input"
        ],
        [
          "program",
          "program"
        ],
        [
          "activate",
          "activate"
        ]
      ],
      "raw_glosses": [
        "(computing) A string of characters or equivalent access code that must be input into a program in order to activate it."
      ],
      "related": [
        {
          "word": "serial number"
        }
      ],
      "synonyms": [
        {
          "tags": [
            "informal"
          ],
          "word": "serial"
        }
      ],
      "topics": [
        "computing",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "sciences"
      ]
    }
  ],
  "word": "serial key"
}

{
  "forms": [
    {
      "form": "serial keys",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "serial key (plural serial keys)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "serial number"
    }
  ],
  "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:Computing",
        "en:Copyright"
      ],
      "glosses": [
        "A string of characters or equivalent access code that must be input into a program in order to activate it."
      ],
      "links": [
        [
          "computing",
          "computing#Noun"
        ],
        [
          "string",
          "string"
        ],
        [
          "character",
          "character"
        ],
        [
          "input",
          "input"
        ],
        [
          "program",
          "program"
        ],
        [
          "activate",
          "activate"
        ]
      ],
      "raw_glosses": [
        "(computing) A string of characters or equivalent access code that must be input into a program in order to activate it."
      ],
      "topics": [
        "computing",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "sciences"
      ]
    }
  ],
  "synonyms": [
    {
      "tags": [
        "informal"
      ],
      "word": "serial"
    }
  ],
  "word": "serial key"
}