"bristas" meaning in Gaulois

{
  "categories": [
    {
      "kind": "other",
      "name": "Noms communs en gaulois",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Gaulois",
      "orig": "gaulois",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "Mot attesté sur un graffite à Limoges (L-74) comme nom propre^([1])^([2]).",
    "Provenant de la racine *bhrei- (broyer)^([1])^([2]).",
    "Comparable au vieil irlandais bres^([1])^([2])."
  ],
  "lang": "Gaulois",
  "lang_code": "gaulois",
  "pos": "noun",
  "pos_title": "Nom commun",
  "raw_tags": [
    "(archaïque)"
  ],
  "related": [
    {
      "word": "brista"
    }
  ],
  "senses": [
    {
      "glosses": [
        "(Incertain) Génitif singulier ancien du mot brista (théoriquement, -ias), signifiant Combat."
      ],
      "id": "fr-bristas-gaulois-noun-hGjG4hX9"
    }
  ],
  "word": "bristas"
}

{
  "categories": [
    "Noms communs en gaulois",
    "gaulois"
  ],
  "etymology_texts": [
    "Mot attesté sur un graffite à Limoges (L-74) comme nom propre^([1])^([2]).",
    "Provenant de la racine *bhrei- (broyer)^([1])^([2]).",
    "Comparable au vieil irlandais bres^([1])^([2])."
  ],
  "lang": "Gaulois",
  "lang_code": "gaulois",
  "pos": "noun",
  "pos_title": "Nom commun",
  "raw_tags": [
    "(archaïque)"
  ],
  "related": [
    {
      "word": "brista"
    }
  ],
  "senses": [
    {
      "glosses": [
        "(Incertain) Génitif singulier ancien du mot brista (théoriquement, -ias), signifiant Combat."
      ]
    }
  ],
  "word": "bristas"
}