"middlebox" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "middle",
        "3": "box"
      },
      "expansion": "middle + box",
      "name": "compound"
    }
  ],
  "etymology_text": "From middle + box.",
  "forms": [
    {
      "form": "middleboxes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "middlebox (plural middleboxes)",
      "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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          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
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          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Computing",
          "orig": "en:Computing",
          "parents": [
            "Technology",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Internet",
          "orig": "en:Internet",
          "parents": [
            "Computing",
            "Networking",
            "Technology",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Networking",
          "orig": "en:Networking",
          "parents": [
            "Computing",
            "Technology",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A device in the Internet that provides transport policy enforcement, such as a firewall."
      ],
      "id": "en-middlebox-en-noun-eIK7rwAA",
      "links": [
        [
          "computing",
          "computing#Noun"
        ],
        [
          "networking",
          "networking#Noun"
        ],
        [
          "Internet",
          "Internet"
        ],
        [
          "device",
          "device"
        ],
        [
          "firewall",
          "firewall"
        ]
      ],
      "raw_glosses": [
        "(computing, networking, Internet) A device in the Internet that provides transport policy enforcement, such as a firewall."
      ],
      "tags": [
        "Internet"
      ],
      "topics": [
        "computing",
        "engineering",
        "mathematics",
        "natural-sciences",
        "networking",
        "physical-sciences",
        "sciences"
      ],
      "wikipedia": [
        "middlebox"
      ]
    }
  ],
  "word": "middlebox"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "middle",
        "3": "box"
      },
      "expansion": "middle + box",
      "name": "compound"
    }
  ],
  "etymology_text": "From middle + box.",
  "forms": [
    {
      "form": "middleboxes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "middlebox (plural middleboxes)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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        "English countable nouns",
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        "English nouns",
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        "Pages with entries",
        "en:Computing",
        "en:Internet",
        "en:Networking"
      ],
      "glosses": [
        "A device in the Internet that provides transport policy enforcement, such as a firewall."
      ],
      "links": [
        [
          "computing",
          "computing#Noun"
        ],
        [
          "networking",
          "networking#Noun"
        ],
        [
          "Internet",
          "Internet"
        ],
        [
          "device",
          "device"
        ],
        [
          "firewall",
          "firewall"
        ]
      ],
      "raw_glosses": [
        "(computing, networking, Internet) A device in the Internet that provides transport policy enforcement, such as a firewall."
      ],
      "tags": [
        "Internet"
      ],
      "topics": [
        "computing",
        "engineering",
        "mathematics",
        "natural-sciences",
        "networking",
        "physical-sciences",
        "sciences"
      ],
      "wikipedia": [
        "middlebox"
      ]
    }
  ],
  "word": "middlebox"
}