"mere pool" meaning in English

{
  "forms": [
    {
      "form": "mere pools",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "mere pool (plural mere pools)",
      "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"
        }
      ],
      "examples": [
        {
          "bold_text_offsets": [
            [
              66,
              76
            ]
          ],
          "ref": "1922, Eleanour Sinclair Rohde, The Old English Herbals, London: Longmans, Green and Co., page 3:",
          "text": "A supernatural terror brooded over the trackless heaths, the dark mere pools were inhabited by the water elves.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A mere or pond."
      ],
      "id": "en-mere_pool-en-noun-HE5wfZDh",
      "links": [
        [
          "pond",
          "pond"
        ]
      ]
    }
  ],
  "word": "mere pool"
}

{
  "forms": [
    {
      "form": "mere pools",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "mere pool (plural mere pools)",
      "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",
        "English terms with quotations",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "bold_text_offsets": [
            [
              66,
              76
            ]
          ],
          "ref": "1922, Eleanour Sinclair Rohde, The Old English Herbals, London: Longmans, Green and Co., page 3:",
          "text": "A supernatural terror brooded over the trackless heaths, the dark mere pools were inhabited by the water elves.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A mere or pond."
      ],
      "links": [
        [
          "pond",
          "pond"
        ]
      ]
    }
  ],
  "word": "mere pool"
}