"drop shadow" meaning in English

{
  "forms": [
    {
      "form": "drop shadows",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "drop shadow (plural drop shadows)",
      "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": "Entries with translation boxes",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Swedish translations",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "A visual effect representing a shadow behind an object, giving the impression that the object is raised from the background."
      ],
      "id": "en-drop_shadow-en-noun-PcJxkGAb",
      "translations": [
        {
          "code": "sv",
          "lang": "Swedish",
          "sense": "Translations",
          "tags": [
            "common-gender"
          ],
          "word": "slagskugga"
        }
      ],
      "wikipedia": [
        "drop shadow"
      ]
    }
  ],
  "word": "drop shadow"
}

{
  "forms": [
    {
      "form": "drop shadows",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "drop shadow (plural drop shadows)",
      "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",
        "Entries with translation boxes",
        "Pages with 1 entry",
        "Pages with entries",
        "Terms with Swedish translations",
        "Translation table header lacks gloss"
      ],
      "glosses": [
        "A visual effect representing a shadow behind an object, giving the impression that the object is raised from the background."
      ],
      "wikipedia": [
        "drop shadow"
      ]
    }
  ],
  "translations": [
    {
      "code": "sv",
      "lang": "Swedish",
      "sense": "Translations",
      "tags": [
        "common-gender"
      ],
      "word": "slagskugga"
    }
  ],
  "word": "drop shadow"
}