"dusky dolphin" meaning in English

{
  "forms": [
    {
      "form": "dusky dolphins",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "dusky dolphin (plural dusky dolphins)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "en",
          "name": "Delphinids",
          "orig": "en:Delphinids",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Aethalodelphis obscurus, a dolphin found in coastal waters in the Southern Hemisphere."
      ],
      "id": "en-dusky_dolphin-en-noun-SV~nHcU9"
    }
  ],
  "word": "dusky dolphin"
}

{
  "forms": [
    {
      "form": "dusky dolphins",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "dusky dolphin (plural dusky dolphins)",
      "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 using missing taxonomic name (species)",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Delphinids"
      ],
      "glosses": [
        "Aethalodelphis obscurus, a dolphin found in coastal waters in the Southern Hemisphere."
      ]
    }
  ],
  "word": "dusky dolphin"
}