"-ed" meaning in Breton

{
  "etymology_templates": [
    {
      "args": {
        "1": "kw",
        "2": "-es"
      },
      "expansion": "Cornish -es",
      "name": "cog"
    }
  ],
  "etymology_text": "Cognate to Cornish -es.",
  "head_templates": [
    {
      "args": {
        "1": "br",
        "2": "suffix",
        "cat2": "plural suffixes"
      },
      "expansion": "-ed",
      "name": "head"
    }
  ],
  "lang": "Breton",
  "lang_code": "br",
  "pos": "suffix",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Breton entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with raw sortkeys",
          "parents": [],
          "source": "w"
        },
        {
          "_dis": "9 4 4 4 4 2 1 2 3 8 7 7 7 9 7 3 2 6 2 6 1 2",
          "kind": "other",
          "name": "Pages with raw sortkeys",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "text": "kazhez (“female cat”) + -ed → kazhezed (“female cats”)",
          "type": "example"
        }
      ],
      "glosses": [
        "Suffix denoting plural of certain nouns"
      ],
      "id": "en--ed-br-suffix-0tGWugFw",
      "links": [
        [
          "plural",
          "plural#English"
        ],
        [
          "noun",
          "noun#English"
        ]
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "word": "-ed"
}

{
  "categories": [
    "Pages with raw sortkeys"
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "kw",
        "2": "-es"
      },
      "expansion": "Cornish -es",
      "name": "cog"
    }
  ],
  "etymology_text": "Cognate to Cornish -es.",
  "head_templates": [
    {
      "args": {
        "1": "br",
        "2": "suffix",
        "cat2": "plural suffixes"
      },
      "expansion": "-ed",
      "name": "head"
    }
  ],
  "lang": "Breton",
  "lang_code": "br",
  "pos": "suffix",
  "senses": [
    {
      "categories": [
        "Breton entries with incorrect language header",
        "Breton lemmas",
        "Breton plural suffixes",
        "Breton suffixes",
        "Pages with raw sortkeys"
      ],
      "examples": [
        {
          "text": "kazhez (“female cat”) + -ed → kazhezed (“female cats”)",
          "type": "example"
        }
      ],
      "glosses": [
        "Suffix denoting plural of certain nouns"
      ],
      "links": [
        [
          "plural",
          "plural#English"
        ],
        [
          "noun",
          "noun#English"
        ]
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "word": "-ed"
}