"buttereau" meaning in French

{
  "etymology_templates": [
    {
      "args": {
        "1": "fr",
        "2": "butte",
        "3": "-ereau"
      },
      "expansion": "butte + -ereau",
      "name": "af"
    }
  ],
  "etymology_text": "From butte + -ereau.",
  "forms": [
    {
      "form": "buttereaux",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m"
      },
      "expansion": "buttereau m (plural buttereaux)",
      "name": "fr-noun"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "French entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "French terms suffixed with -ereau",
          "parents": [],
          "source": "w"
        }
      ],
      "form_of": [
        {
          "word": "butte a little hill"
        },
        {
          "word": "knoll"
        },
        {
          "word": "mound"
        }
      ],
      "glosses": [
        "Diminutive of butte a little hill, knoll, mound"
      ],
      "id": "en-buttereau-fr-noun-7OTDyII1",
      "links": [
        [
          "butte",
          "butte#French"
        ]
      ],
      "tags": [
        "diminutive",
        "form-of",
        "masculine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/by.tʁo/"
    }
  ],
  "word": "buttereau"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "fr",
        "2": "butte",
        "3": "-ereau"
      },
      "expansion": "butte + -ereau",
      "name": "af"
    }
  ],
  "etymology_text": "From butte + -ereau.",
  "forms": [
    {
      "form": "buttereaux",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m"
      },
      "expansion": "buttereau m (plural buttereaux)",
      "name": "fr-noun"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "French 2-syllable words",
        "French countable nouns",
        "French diminutive nouns",
        "French entries with incorrect language header",
        "French lemmas",
        "French masculine nouns",
        "French nouns",
        "French nouns with red links in their headword lines",
        "French terms suffixed with -ereau",
        "French terms with IPA pronunciation"
      ],
      "form_of": [
        {
          "word": "butte a little hill"
        },
        {
          "word": "knoll"
        },
        {
          "word": "mound"
        }
      ],
      "glosses": [
        "Diminutive of butte a little hill, knoll, mound"
      ],
      "links": [
        [
          "butte",
          "butte#French"
        ]
      ],
      "tags": [
        "diminutive",
        "form-of",
        "masculine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/by.tʁo/"
    }
  ],
  "word": "buttereau"
}