"downcall" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "down",
        "3": "call"
      },
      "expansion": "down- + call",
      "name": "prefix"
    }
  ],
  "etymology_text": "From down- + call.",
  "forms": [
    {
      "form": "downcalls",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "downcall (plural downcalls)",
      "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 terms prefixed with down-",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "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": "Programming",
          "orig": "en:Programming",
          "parents": [
            "Computing",
            "Software engineering",
            "Technology",
            "Computer science",
            "Engineering",
            "Software",
            "All topics",
            "Sciences",
            "Applied sciences",
            "Media",
            "Fundamental",
            "Communication"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A call from a higher-level subsystem, such as user code, to a lower-level subsystem, such as a kernel or framework."
      ],
      "id": "en-downcall-en-noun-5Z2QmMK~",
      "links": [
        [
          "computing",
          "computing#Noun"
        ],
        [
          "programming",
          "programming#Noun"
        ],
        [
          "call",
          "call"
        ],
        [
          "user",
          "user"
        ],
        [
          "code",
          "code"
        ],
        [
          "kernel",
          "kernel"
        ],
        [
          "framework",
          "framework"
        ]
      ],
      "raw_glosses": [
        "(computing, programming) A call from a higher-level subsystem, such as user code, to a lower-level subsystem, such as a kernel or framework."
      ],
      "topics": [
        "computing",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "programming",
        "sciences"
      ]
    }
  ],
  "word": "downcall"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "down",
        "3": "call"
      },
      "expansion": "down- + call",
      "name": "prefix"
    }
  ],
  "etymology_text": "From down- + call.",
  "forms": [
    {
      "form": "downcalls",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "downcall (plural downcalls)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms prefixed with down-",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Computing",
        "en:Programming"
      ],
      "glosses": [
        "A call from a higher-level subsystem, such as user code, to a lower-level subsystem, such as a kernel or framework."
      ],
      "links": [
        [
          "computing",
          "computing#Noun"
        ],
        [
          "programming",
          "programming#Noun"
        ],
        [
          "call",
          "call"
        ],
        [
          "user",
          "user"
        ],
        [
          "code",
          "code"
        ],
        [
          "kernel",
          "kernel"
        ],
        [
          "framework",
          "framework"
        ]
      ],
      "raw_glosses": [
        "(computing, programming) A call from a higher-level subsystem, such as user code, to a lower-level subsystem, such as a kernel or framework."
      ],
      "topics": [
        "computing",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "programming",
        "sciences"
      ]
    }
  ],
  "word": "downcall"
}