"lertsun" meaning in Basque

{
  "categories": [
    {
      "kind": "other",
      "name": "Noms communs en basque",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Basque",
      "orig": "basque",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "De lertzo (« sale »)."
  ],
  "lang": "Basque",
  "lang_code": "eu",
  "pos": "noun",
  "pos_title": "Nom commun",
  "related": [
    {
      "translation": "héron",
      "word": "lertxun"
    }
  ],
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Oiseaux en basque",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "Leihotik lertsunak lerro-lerroka zeruetan hara hegalka joanki hirukitan ikusten nituen, de la fenêtre, je voyais les grues alignées, s'en allant à travers ciel, en triangle."
        }
      ],
      "glosses": [
        "Grue."
      ],
      "id": "fr-lertsun-eu-noun-QhPoU7T5",
      "topics": [
        "ornithology"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "kurrilo"
    }
  ],
  "word": "lertsun"
}

{
  "categories": [
    "Noms communs en basque",
    "basque"
  ],
  "etymology_texts": [
    "De lertzo (« sale »)."
  ],
  "lang": "Basque",
  "lang_code": "eu",
  "pos": "noun",
  "pos_title": "Nom commun",
  "related": [
    {
      "translation": "héron",
      "word": "lertxun"
    }
  ],
  "senses": [
    {
      "categories": [
        "Oiseaux en basque"
      ],
      "examples": [
        {
          "text": "Leihotik lertsunak lerro-lerroka zeruetan hara hegalka joanki hirukitan ikusten nituen, de la fenêtre, je voyais les grues alignées, s'en allant à travers ciel, en triangle."
        }
      ],
      "glosses": [
        "Grue."
      ],
      "topics": [
        "ornithology"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "kurrilo"
    }
  ],
  "word": "lertsun"
}