"undertaste" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "under",
        "3": "taste"
      },
      "expansion": "under- + taste",
      "name": "prefix"
    }
  ],
  "etymology_text": "under- + taste",
  "forms": [
    {
      "form": "undertastes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "undertaste (plural undertastes)",
      "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": "English terms prefixed with under-",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1967, Ira Levin, Rosemary's Baby",
          "text": "The mousse was excellent, but it had a chalky undertaste that reminded Rosemary of blackboards and grade school.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "An underlying taste."
      ],
      "id": "en-undertaste-en-noun-NbXYqgGs",
      "links": [
        [
          "taste",
          "taste"
        ]
      ],
      "synonyms": [
        {
          "word": "subflavour"
        },
        {
          "word": "underflavour"
        }
      ]
    }
  ],
  "word": "undertaste"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "under",
        "3": "taste"
      },
      "expansion": "under- + taste",
      "name": "prefix"
    }
  ],
  "etymology_text": "under- + taste",
  "forms": [
    {
      "form": "undertastes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "undertaste (plural undertastes)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms prefixed with under-",
        "English terms with quotations",
        "Quotation templates to be cleaned"
      ],
      "examples": [
        {
          "ref": "1967, Ira Levin, Rosemary's Baby",
          "text": "The mousse was excellent, but it had a chalky undertaste that reminded Rosemary of blackboards and grade school.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "An underlying taste."
      ],
      "links": [
        [
          "taste",
          "taste"
        ]
      ]
    }
  ],
  "synonyms": [
    {
      "word": "subflavour"
    },
    {
      "word": "underflavour"
    }
  ],
  "word": "undertaste"
}