"ex imo corde" meaning in Latin

{
  "categories": [
    {
      "kind": "other",
      "name": "Adverbes en latin",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Lemmes en latin",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Latin",
      "orig": "latin",
      "parents": [],
      "source": "w"
    }
  ],
  "lang": "Latin",
  "lang_code": "la",
  "pos": "adv",
  "pos_title": "Adverbe",
  "senses": [
    {
      "glosses": [
        "Du fond du cœur."
      ],
      "id": "fr-ex_imo_corde-la-adv-PGcvudnA"
    }
  ],
  "word": "ex imo corde"
}

{
  "categories": [
    "Adverbes en latin",
    "Lemmes en latin",
    "latin"
  ],
  "lang": "Latin",
  "lang_code": "la",
  "pos": "adv",
  "pos_title": "Adverbe",
  "senses": [
    {
      "glosses": [
        "Du fond du cœur."
      ]
    }
  ],
  "word": "ex imo corde"
}