"-d" meaning in Fula

{
  "head_templates": [
    {
      "args": {
        "1": "ff",
        "2": "affix"
      },
      "expansion": "-d",
      "name": "head"
    }
  ],
  "lang": "Fula",
  "lang_code": "ff",
  "pos": "affix",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Fula affixes",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Fula entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 9 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pulaar",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "haalde (“to say, speak”) + -d → haaldude (“to talk to each other, negotiate, transact”)",
          "type": "example"
        }
      ],
      "glosses": [
        "indicates that the action is performed with someone or something"
      ],
      "id": "en--d-ff-affix-UmecftNl",
      "raw_glosses": [
        "(Pulaar) indicates that the action is performed with someone or something"
      ],
      "tags": [
        "Pulaar"
      ]
    }
  ],
  "word": "-d"
}

{
  "head_templates": [
    {
      "args": {
        "1": "ff",
        "2": "affix"
      },
      "expansion": "-d",
      "name": "head"
    }
  ],
  "lang": "Fula",
  "lang_code": "ff",
  "pos": "affix",
  "senses": [
    {
      "categories": [
        "Fula affixes",
        "Fula entries with incorrect language header",
        "Fula lemmas",
        "Pages with 9 entries",
        "Pages with entries",
        "Pulaar"
      ],
      "examples": [
        {
          "text": "haalde (“to say, speak”) + -d → haaldude (“to talk to each other, negotiate, transact”)",
          "type": "example"
        }
      ],
      "glosses": [
        "indicates that the action is performed with someone or something"
      ],
      "raw_glosses": [
        "(Pulaar) indicates that the action is performed with someone or something"
      ],
      "tags": [
        "Pulaar"
      ]
    }
  ],
  "word": "-d"
}