"giant-killer" meaning in English

{
  "forms": [
    {
      "form": "giant-killers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "giant-killer (plural giant-killers)",
      "name": "en-noun"
    }
  ],
  "hyphenation": [
    "gi‧ant"
  ],
  "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": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Sports",
          "orig": "en:Sports",
          "parents": [
            "Human activity",
            "Human behaviour",
            "Human",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Someone or something, especially a sports team, that defeats a larger and superior opponent."
      ],
      "id": "en-giant-killer-en-noun-giOBOIIN",
      "links": [
        [
          "defeat",
          "defeat"
        ],
        [
          "opponent",
          "opponent"
        ]
      ],
      "related": [
        {
          "word": "giant-killing"
        }
      ],
      "wikipedia": [
        "Norton Simon Museum",
        "Peter Paul Rubens"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈd͡ʒaɪəntˌkɪlə(ɹ)/",
      "tags": [
        "Received-Pronunciation"
      ]
    },
    {
      "ipa": "/ˈd͡ʒaɪəntˌkɪlɚ/",
      "tags": [
        "General-American"
      ]
    },
    {
      "audio": "en-au-giant-killer.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/2/29/En-au-giant-killer.ogg/En-au-giant-killer.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/2/29/En-au-giant-killer.ogg"
    }
  ],
  "word": "giant-killer"
}

{
  "forms": [
    {
      "form": "giant-killers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "giant-killer (plural giant-killers)",
      "name": "en-noun"
    }
  ],
  "hyphenation": [
    "gi‧ant"
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "giant-killing"
    }
  ],
  "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:Sports"
      ],
      "glosses": [
        "Someone or something, especially a sports team, that defeats a larger and superior opponent."
      ],
      "links": [
        [
          "defeat",
          "defeat"
        ],
        [
          "opponent",
          "opponent"
        ]
      ],
      "wikipedia": [
        "Norton Simon Museum",
        "Peter Paul Rubens"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈd͡ʒaɪəntˌkɪlə(ɹ)/",
      "tags": [
        "Received-Pronunciation"
      ]
    },
    {
      "ipa": "/ˈd͡ʒaɪəntˌkɪlɚ/",
      "tags": [
        "General-American"
      ]
    },
    {
      "audio": "en-au-giant-killer.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/2/29/En-au-giant-killer.ogg/En-au-giant-killer.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/2/29/En-au-giant-killer.ogg"
    }
  ],
  "word": "giant-killer"
}