"true yam" meaning in English

{
  "forms": [
    {
      "form": "true yams",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "true yam (plural true yams)",
      "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": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "lifeform",
          "langcode": "en",
          "name": "Dioscoreales order plants",
          "orig": "en:Dioscoreales order plants",
          "parents": [
            "Plants",
            "Lifeforms",
            "All topics",
            "Life",
            "Fundamental",
            "Nature"
          ],
          "source": "w"
        },
        {
          "kind": "lifeform",
          "langcode": "en",
          "name": "Root vegetables",
          "orig": "en:Root vegetables",
          "parents": [
            "Vegetables",
            "Foods",
            "Plants",
            "Eating",
            "Food and drink",
            "Lifeforms",
            "Human behaviour",
            "All topics",
            "Life",
            "Human",
            "Fundamental",
            "Nature"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Any plant in the genus Dioscorea, or its tubers, so called to distinguish them from the sweet potato (Ipomoea batatas) varieties known as yams in the US, and from the New Zealand yam, Oxalis tuberosa ."
      ],
      "id": "en-true_yam-en-noun-PY1rBh-O",
      "links": [
        [
          "genus",
          "genus"
        ],
        [
          "Dioscorea",
          "Dioscorea#Translingual"
        ],
        [
          "tuber",
          "tuber"
        ],
        [
          "sweet potato",
          "sweet potato"
        ],
        [
          "Ipomoea batatas",
          "Ipomoea batatas#Translingual"
        ],
        [
          "yam",
          "yam"
        ],
        [
          "New Zealand yam",
          "New Zealand yam"
        ]
      ]
    }
  ],
  "word": "true yam"
}

{
  "forms": [
    {
      "form": "true yams",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "true yam (plural true yams)",
      "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:Dioscoreales order plants",
        "en:Root vegetables"
      ],
      "glosses": [
        "Any plant in the genus Dioscorea, or its tubers, so called to distinguish them from the sweet potato (Ipomoea batatas) varieties known as yams in the US, and from the New Zealand yam, Oxalis tuberosa ."
      ],
      "links": [
        [
          "genus",
          "genus"
        ],
        [
          "Dioscorea",
          "Dioscorea#Translingual"
        ],
        [
          "tuber",
          "tuber"
        ],
        [
          "sweet potato",
          "sweet potato"
        ],
        [
          "Ipomoea batatas",
          "Ipomoea batatas#Translingual"
        ],
        [
          "yam",
          "yam"
        ],
        [
          "New Zealand yam",
          "New Zealand yam"
        ]
      ]
    }
  ],
  "word": "true yam"
}