"grenade OF" meaning in Français

{
  "categories": [
    {
      "kind": "other",
      "name": "Locutions nominales en français",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Français",
      "orig": "français",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "De grenade et OF, apocope du mot offensive."
  ],
  "forms": [
    {
      "form": "grenades OF",
      "tags": [
        "plural"
      ]
    }
  ],
  "lang": "Français",
  "lang_code": "fr",
  "pos": "noun",
  "pos_title": "Locution nominale",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Armes en français",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Exemples en français",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "Roger Vercel, Capitaine Conan, Albin Michel, 1934, collection Le Livre de Poche, page 145.",
          "text": "Puis il me fit admirer leurs casques dépolis, leurs poignards dans une gaine de drap, leurs grenades OF, enveloppées de papier comme des œufs."
        }
      ],
      "glosses": [
        "Grenade offensive."
      ],
      "id": "fr-grenade_OF-fr-noun-ONu9s4w1",
      "raw_tags": [
        "Armement"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\ɡʁə.na.d‿ɔf\\"
    }
  ],
  "synonyms": [
    {
      "word": "OF"
    }
  ],
  "tags": [
    "feminine"
  ],
  "word": "grenade OF"
}

{
  "categories": [
    "Locutions nominales en français",
    "français"
  ],
  "etymology_texts": [
    "De grenade et OF, apocope du mot offensive."
  ],
  "forms": [
    {
      "form": "grenades OF",
      "tags": [
        "plural"
      ]
    }
  ],
  "lang": "Français",
  "lang_code": "fr",
  "pos": "noun",
  "pos_title": "Locution nominale",
  "senses": [
    {
      "categories": [
        "Armes en français",
        "Exemples en français"
      ],
      "examples": [
        {
          "ref": "Roger Vercel, Capitaine Conan, Albin Michel, 1934, collection Le Livre de Poche, page 145.",
          "text": "Puis il me fit admirer leurs casques dépolis, leurs poignards dans une gaine de drap, leurs grenades OF, enveloppées de papier comme des œufs."
        }
      ],
      "glosses": [
        "Grenade offensive."
      ],
      "raw_tags": [
        "Armement"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\ɡʁə.na.d‿ɔf\\"
    }
  ],
  "synonyms": [
    {
      "word": "OF"
    }
  ],
  "tags": [
    "feminine"
  ],
  "word": "grenade OF"
}