"гречка" meaning in Russe

{
  "categories": [
    {
      "kind": "other",
      "name": "Dérivations en russe",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Lemmes en russe",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Mots en russe suffixés avec -ка",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Noms communs en russe",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Russe",
      "orig": "russe",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "Dérivé de греча, greča (« sarrasin »), avec le suffixe -ка, -ka."
  ],
  "lang": "Russe",
  "lang_code": "ru",
  "paronyms": [
    {
      "word": "Гречко"
    }
  ],
  "pos": "noun",
  "pos_title": "Nom commun",
  "raw_tags": [
    "grečka"
  ],
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Céréales en russe",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Wiktionnaire:Exemples manquants en russe",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Sarrasin."
      ],
      "id": "fr-гречка-ru-noun-D41WYDwF",
      "topics": [
        "botany"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\ɡrʲet͡ɕkə\\"
    }
  ],
  "tags": [
    "feminine"
  ],
  "word": "гречка"
}

{
  "categories": [
    "Dérivations en russe",
    "Lemmes en russe",
    "Mots en russe suffixés avec -ка",
    "Noms communs en russe",
    "russe"
  ],
  "etymology_texts": [
    "Dérivé de греча, greča (« sarrasin »), avec le suffixe -ка, -ka."
  ],
  "lang": "Russe",
  "lang_code": "ru",
  "paronyms": [
    {
      "word": "Гречко"
    }
  ],
  "pos": "noun",
  "pos_title": "Nom commun",
  "raw_tags": [
    "grečka"
  ],
  "senses": [
    {
      "categories": [
        "Céréales en russe",
        "Wiktionnaire:Exemples manquants en russe"
      ],
      "glosses": [
        "Sarrasin."
      ],
      "topics": [
        "botany"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\ɡrʲet͡ɕkə\\"
    }
  ],
  "tags": [
    "feminine"
  ],
  "word": "гречка"
}