"aresta" meaning in Catalan

{
  "categories": [
    {
      "kind": "other",
      "name": "Mots en catalan issus d’un mot en latin",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Noms communs en catalan",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Catalan",
      "orig": "catalan",
      "parents": [],
      "source": "w"
    }
  ],
  "derived": [
    {
      "word": "aresblanc"
    },
    {
      "word": "aresnegre"
    },
    {
      "word": "arester"
    },
    {
      "word": "arestós"
    }
  ],
  "etymology_texts": [
    "Du latin arista."
  ],
  "forms": [
    {
      "form": "arestes",
      "tags": [
        "plural"
      ]
    }
  ],
  "lang": "Catalan",
  "lang_code": "ca",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Lexique en catalan de la géométrie",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Lexique en catalan de la zoologie",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Arête."
      ],
      "id": "fr-aresta-ca-noun-AXAT8DGr",
      "topics": [
        "geometry",
        "zoology"
      ]
    },
    {
      "categories": [
        {
          "kind": "other",
          "name": "Lexique en catalan de la botanique",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Épine."
      ],
      "id": "fr-aresta-ca-noun-WtfVzajp",
      "topics": [
        "botany"
      ]
    }
  ],
  "tags": [
    "feminine"
  ],
  "word": "aresta"
}

{
  "categories": [
    "Mots en catalan issus d’un mot en latin",
    "Noms communs en catalan",
    "catalan"
  ],
  "derived": [
    {
      "word": "aresblanc"
    },
    {
      "word": "aresnegre"
    },
    {
      "word": "arester"
    },
    {
      "word": "arestós"
    }
  ],
  "etymology_texts": [
    "Du latin arista."
  ],
  "forms": [
    {
      "form": "arestes",
      "tags": [
        "plural"
      ]
    }
  ],
  "lang": "Catalan",
  "lang_code": "ca",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "categories": [
        "Lexique en catalan de la géométrie",
        "Lexique en catalan de la zoologie"
      ],
      "glosses": [
        "Arête."
      ],
      "topics": [
        "geometry",
        "zoology"
      ]
    },
    {
      "categories": [
        "Lexique en catalan de la botanique"
      ],
      "glosses": [
        "Épine."
      ],
      "topics": [
        "botany"
      ]
    }
  ],
  "tags": [
    "feminine"
  ],
  "word": "aresta"
}