"night adder" meaning in English

{
  "forms": [
    {
      "form": "night adders",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "night adder (plural night adders)",
      "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": "lifeform",
          "langcode": "en",
          "name": "Vipers",
          "orig": "en:Vipers",
          "parents": [
            "Snakes",
            "Reptiles",
            "Vertebrates",
            "Chordates",
            "Animals",
            "Lifeforms",
            "All topics",
            "Life",
            "Fundamental",
            "Nature"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "An African viper of the genus Causus."
      ],
      "id": "en-night_adder-en-noun-b7Ne3Vvv",
      "links": [
        [
          "viper",
          "viper"
        ],
        [
          "Causus",
          "Causus#Translingual"
        ]
      ]
    }
  ],
  "word": "night adder"
}

{
  "forms": [
    {
      "form": "night adders",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "night adder (plural night adders)",
      "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",
        "en:Vipers"
      ],
      "glosses": [
        "An African viper of the genus Causus."
      ],
      "links": [
        [
          "viper",
          "viper"
        ],
        [
          "Causus",
          "Causus#Translingual"
        ]
      ]
    }
  ],
  "word": "night adder"
}