"cērijam" meaning in Letton

{
  "categories": [
    {
      "kind": "other",
      "name": "Formes de noms communs en letton",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Letton",
      "orig": "letton",
      "parents": [],
      "source": "w"
    }
  ],
  "forms": [
    {
      "form": "Singulier"
    },
    {
      "form": "cērijs",
      "tags": [
        "nominative"
      ]
    },
    {
      "form": "cēriju",
      "tags": [
        "accusative"
      ]
    },
    {
      "form": "cērija",
      "tags": [
        "genitive"
      ]
    },
    {
      "form": "cēriju",
      "tags": [
        "instrumental"
      ]
    },
    {
      "form": "cērijā",
      "tags": [
        "locative"
      ]
    },
    {
      "form": "cērij",
      "tags": [
        "vocative"
      ]
    }
  ],
  "lang": "Letton",
  "lang_code": "lv",
  "pos": "noun",
  "pos_title": "Forme de nom commun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Wiktionnaire:Exemples manquants en letton",
          "parents": [],
          "source": "w"
        }
      ],
      "form_of": [
        {
          "word": "cērijs"
        }
      ],
      "glosses": [
        "Datif singulier de cērijs."
      ],
      "id": "fr-cērijam-lv-noun-F-5Py3p7",
      "tags": [
        "form-of"
      ]
    }
  ],
  "tags": [
    "form-of"
  ],
  "word": "cērijam"
}

{
  "categories": [
    "Formes de noms communs en letton",
    "letton"
  ],
  "forms": [
    {
      "form": "Singulier"
    },
    {
      "form": "cērijs",
      "tags": [
        "nominative"
      ]
    },
    {
      "form": "cēriju",
      "tags": [
        "accusative"
      ]
    },
    {
      "form": "cērija",
      "tags": [
        "genitive"
      ]
    },
    {
      "form": "cēriju",
      "tags": [
        "instrumental"
      ]
    },
    {
      "form": "cērijā",
      "tags": [
        "locative"
      ]
    },
    {
      "form": "cērij",
      "tags": [
        "vocative"
      ]
    }
  ],
  "lang": "Letton",
  "lang_code": "lv",
  "pos": "noun",
  "pos_title": "Forme de nom commun",
  "senses": [
    {
      "categories": [
        "Wiktionnaire:Exemples manquants en letton"
      ],
      "form_of": [
        {
          "word": "cērijs"
        }
      ],
      "glosses": [
        "Datif singulier de cērijs."
      ],
      "tags": [
        "form-of"
      ]
    }
  ],
  "tags": [
    "form-of"
  ],
  "word": "cērijam"
}