"-acées" meaning in French

{
  "head_templates": [
    {
      "args": {
        "1": "f-p"
      },
      "expansion": "-acées f pl (plural only)",
      "name": "fr-noun"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "suffix",
  "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 pluralia tantum",
          "parents": [
            "Pluralia tantum",
            "Nouns",
            "Lemmas"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "fr",
          "name": "Taxonomy",
          "orig": "fr:Taxonomy",
          "parents": [
            "Biology",
            "Evolutionary theory",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "-aceae"
      ],
      "id": "en--acées-fr-suffix-LAktRDkk",
      "links": [
        [
          "taxonomy",
          "taxonomy"
        ],
        [
          "-aceae",
          "-aceae"
        ]
      ],
      "raw_glosses": [
        "(taxonomy) -aceae"
      ],
      "tags": [
        "feminine",
        "morpheme",
        "plural",
        "plural-only"
      ],
      "topics": [
        "biology",
        "natural-sciences",
        "taxonomy"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/a.se/"
    }
  ],
  "word": "-acées"
}

{
  "head_templates": [
    {
      "args": {
        "1": "f-p"
      },
      "expansion": "-acées f pl (plural only)",
      "name": "fr-noun"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "suffix",
  "senses": [
    {
      "categories": [
        "French 2-syllable words",
        "French entries with incorrect language header",
        "French feminine suffixes",
        "French lemmas",
        "French noun-forming suffixes",
        "French pluralia tantum",
        "French suffixes",
        "French terms with IPA pronunciation",
        "fr:Taxonomy"
      ],
      "glosses": [
        "-aceae"
      ],
      "links": [
        [
          "taxonomy",
          "taxonomy"
        ],
        [
          "-aceae",
          "-aceae"
        ]
      ],
      "raw_glosses": [
        "(taxonomy) -aceae"
      ],
      "tags": [
        "feminine",
        "morpheme",
        "plural",
        "plural-only"
      ],
      "topics": [
        "biology",
        "natural-sciences",
        "taxonomy"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/a.se/"
    }
  ],
  "word": "-acées"
}