"定形郵便物" meaning in 日本語

{
  "categories": [
    {
      "kind": "other",
      "name": "日本語",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "日本語 名詞",
      "parents": [],
      "source": "w"
    }
  ],
  "forms": [
    {
      "form": "ていけいゆうびんぶつ"
    }
  ],
  "lang": "日本語",
  "lang_code": "ja",
  "pos": "noun",
  "pos_title": "名詞",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "日本語 郵便",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "縦23.5cm以下、橫12cm以下、厚さ1cm以下、質量50g以下を全て満たす郵便物。"
      ],
      "id": "ja-定形郵便物-ja-noun-xg0boAW~",
      "raw_tags": [
        "郵便"
      ]
    }
  ],
  "word": "定形郵便物"
}

{
  "categories": [
    "日本語",
    "日本語 名詞"
  ],
  "forms": [
    {
      "form": "ていけいゆうびんぶつ"
    }
  ],
  "lang": "日本語",
  "lang_code": "ja",
  "pos": "noun",
  "pos_title": "名詞",
  "senses": [
    {
      "categories": [
        "日本語 郵便"
      ],
      "glosses": [
        "縦23.5cm以下、橫12cm以下、厚さ1cm以下、質量50g以下を全て満たす郵便物。"
      ],
      "raw_tags": [
        "郵便"
      ]
    }
  ],
  "word": "定形郵便物"
}