"rossa" meaning in Champenois

{
  "categories": [
    {
      "kind": "other",
      "name": "Noms communs en champenois",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Champenois",
      "orig": "champenois",
      "parents": [],
      "source": "w"
    }
  ],
  "lang": "Champenois",
  "lang_code": "champenois",
  "notes": [
    "Le mot est attesté chez Pierre-Jean Grosley dans Éphémérides troyennes (1761) et chez Prosper Tarbé dans Recherches sur l’histoire du langage et des patois de Champagne (1851)."
  ],
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Poissons en champenois",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Wiktionnaire:Exemples manquants en champenois",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Champenois de la Marne",
          "orig": "champenois de la Marne",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Champenois de l’Aube",
          "orig": "champenois de l’Aube",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Petit poisson blanc."
      ],
      "id": "fr-rossa-champenois-noun-PoarbvJI",
      "raw_tags": [
        "Aube",
        "Marne"
      ],
      "topics": [
        "ichthyology"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "rossa.lle"
    }
  ],
  "word": "rossa"
}

{
  "categories": [
    "Noms communs en champenois",
    "champenois"
  ],
  "lang": "Champenois",
  "lang_code": "champenois",
  "notes": [
    "Le mot est attesté chez Pierre-Jean Grosley dans Éphémérides troyennes (1761) et chez Prosper Tarbé dans Recherches sur l’histoire du langage et des patois de Champagne (1851)."
  ],
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "categories": [
        "Poissons en champenois",
        "Wiktionnaire:Exemples manquants en champenois",
        "champenois de la Marne",
        "champenois de l’Aube"
      ],
      "glosses": [
        "Petit poisson blanc."
      ],
      "raw_tags": [
        "Aube",
        "Marne"
      ],
      "topics": [
        "ichthyology"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "rossa.lle"
    }
  ],
  "word": "rossa"
}