"cottontop" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "cotton",
        "3": "top"
      },
      "expansion": "cotton + top",
      "name": "compound"
    }
  ],
  "etymology_text": "From cotton + top.",
  "forms": [
    {
      "form": "cottontops",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "cottontop (plural cottontops)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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          "kind": "other",
          "name": "English entries with incorrect language header",
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        },
        {
          "kind": "lifeform",
          "langcode": "en",
          "name": "New World monkeys",
          "orig": "en:New World monkeys",
          "parents": [
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            "Primates",
            "Mammals",
            "Vertebrates",
            "Chordates",
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          "source": "w"
        }
      ],
      "derived": [
        {
          "word": "cottontop tamarin"
        }
      ],
      "glosses": [
        "An arboreal, diurnal New World tamarin Saguinus oedipus"
      ],
      "id": "en-cottontop-en-noun-8ywH8BI5",
      "links": [
        [
          "arboreal",
          "arboreal"
        ],
        [
          "diurnal",
          "diurnal"
        ],
        [
          "New World",
          "New World"
        ],
        [
          "tamarin",
          "tamarin"
        ]
      ],
      "wikipedia": [
        "Cottontop Tamarin"
      ]
    }
  ],
  "word": "cottontop"
}

{
  "derived": [
    {
      "word": "cottontop tamarin"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "cotton",
        "3": "top"
      },
      "expansion": "cotton + top",
      "name": "compound"
    }
  ],
  "etymology_text": "From cotton + top.",
  "forms": [
    {
      "form": "cottontops",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "cottontop (plural cottontops)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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        "An arboreal, diurnal New World tamarin Saguinus oedipus"
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        ],
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          "diurnal",
          "diurnal"
        ],
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        ],
        [
          "tamarin",
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        ]
      ],
      "wikipedia": [
        "Cottontop Tamarin"
      ]
    }
  ],
  "word": "cottontop"
}