"plain paper" meaning in English

{
  "forms": [
    {
      "form": "plain papers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "-",
        "2": "s"
      },
      "expansion": "plain paper (usually uncountable, plural plain papers)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "_dis": "61 39",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "82 18",
          "kind": "other",
          "name": "Entries with translation boxes",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "73 27",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "69 31",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "54 46",
          "kind": "other",
          "name": "Terms with Arabic translations",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "text": "Toss me a ream of that plain paper, please. The printer is empty again.",
          "type": "example"
        }
      ],
      "glosses": [
        "Paper that has no ruled lines or other markings on it."
      ],
      "id": "en-plain_paper-en-noun-uvoUpurD",
      "links": [
        [
          "rule",
          "rule"
        ],
        [
          "line",
          "line"
        ]
      ],
      "synonyms": [
        {
          "_dis1": "57 43",
          "sense": "paper without markings",
          "word": "typing paper"
        }
      ],
      "tags": [
        "uncountable",
        "usually"
      ],
      "translations": [
        {
          "_dis1": "89 11",
          "code": "ar",
          "lang": "Arabic",
          "roman": "waraq ʕādiyy",
          "sense": "Paper that has no ruled lines or other markings on it",
          "word": "وَرَق عَادِيّ"
        }
      ]
    },
    {
      "categories": [
        {
          "_dis": "54 46",
          "kind": "other",
          "name": "Terms with Arabic translations",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "30 70",
          "kind": "topical",
          "langcode": "en",
          "name": "Paper",
          "orig": "en:Paper",
          "parents": [
            "Materials",
            "Manufacturing",
            "Human activity",
            "Human behaviour",
            "Human",
            "All topics",
            "Fundamental"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "Non-glossy photographic paper."
      ],
      "id": "en-plain_paper-en-noun-QSs7fI2Z",
      "links": [
        [
          "glossy",
          "glossy"
        ],
        [
          "photographic",
          "photographic"
        ]
      ],
      "tags": [
        "uncountable",
        "usually"
      ]
    }
  ],
  "word": "plain paper"
}

{
  "categories": [
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English multiword terms",
    "English nouns",
    "English uncountable nouns",
    "Entries with translation boxes",
    "Pages with 1 entry",
    "Pages with entries",
    "Terms with Arabic translations",
    "en:Paper"
  ],
  "forms": [
    {
      "form": "plain papers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "-",
        "2": "s"
      },
      "expansion": "plain paper (usually uncountable, plural plain papers)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English terms with usage examples"
      ],
      "examples": [
        {
          "text": "Toss me a ream of that plain paper, please. The printer is empty again.",
          "type": "example"
        }
      ],
      "glosses": [
        "Paper that has no ruled lines or other markings on it."
      ],
      "links": [
        [
          "rule",
          "rule"
        ],
        [
          "line",
          "line"
        ]
      ],
      "tags": [
        "uncountable",
        "usually"
      ]
    },
    {
      "glosses": [
        "Non-glossy photographic paper."
      ],
      "links": [
        [
          "glossy",
          "glossy"
        ],
        [
          "photographic",
          "photographic"
        ]
      ],
      "tags": [
        "uncountable",
        "usually"
      ]
    }
  ],
  "synonyms": [
    {
      "sense": "paper without markings",
      "word": "typing paper"
    }
  ],
  "translations": [
    {
      "code": "ar",
      "lang": "Arabic",
      "roman": "waraq ʕādiyy",
      "sense": "Paper that has no ruled lines or other markings on it",
      "word": "وَرَق عَادِيّ"
    }
  ],
  "word": "plain paper"
}