"hairen" meaning in Champenois

{
  "categories": [
    {
      "kind": "other",
      "name": "Noms communs en champenois",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Champenois",
      "orig": "champenois",
      "parents": [],
      "source": "w"
    }
  ],
  "derived": [
    {
      "word": "Un hairen, deux hairens, trois hairens. Pique."
    },
    {
      "word": "Is s’partageot ène hairen entre sept."
    }
  ],
  "lang": "Champenois",
  "lang_code": "champenois",
  "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 Dampierre (Haute-Marne)",
          "orig": "champenois de Dampierre (Haute-Marne)",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Champenois de Loches-sur-Ource",
          "orig": "champenois de Loches-sur-Ource",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Champenois de Ville-sous-la-Ferté",
          "orig": "champenois de Ville-sous-la-Ferté",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Champenois d’Hortes",
          "orig": "champenois d’Hortes",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "(Dampierre (Haute-Marne)) Hareng."
      ],
      "id": "fr-hairen-champenois-noun-gCsa~7vu",
      "raw_tags": [
        "Hortes",
        "Loches-sur-Ource",
        "Ville-sous-la-Ferté"
      ],
      "topics": [
        "ichthyology"
      ]
    }
  ],
  "word": "hairen"
}

{
  "categories": [
    "Noms communs en champenois",
    "champenois"
  ],
  "derived": [
    {
      "word": "Un hairen, deux hairens, trois hairens. Pique."
    },
    {
      "word": "Is s’partageot ène hairen entre sept."
    }
  ],
  "lang": "Champenois",
  "lang_code": "champenois",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "categories": [
        "Poissons en champenois",
        "Wiktionnaire:Exemples manquants en champenois",
        "champenois de Dampierre (Haute-Marne)",
        "champenois de Loches-sur-Ource",
        "champenois de Ville-sous-la-Ferté",
        "champenois d’Hortes"
      ],
      "glosses": [
        "(Dampierre (Haute-Marne)) Hareng."
      ],
      "raw_tags": [
        "Hortes",
        "Loches-sur-Ource",
        "Ville-sous-la-Ferté"
      ],
      "topics": [
        "ichthyology"
      ]
    }
  ],
  "word": "hairen"
}