"plain water" meaning in English

{
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        "1": "-"
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      "expansion": "plain water (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Singapore English",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1971 June 17, The Straits Times, page 19",
          "text": "Politely I asked for a glass of plain water.",
          "type": "quotation"
        },
        {
          "ref": "1974 February 21, New Nation: Using Less Water, page 6",
          "text": "A visitor from Down Under is wondering why most Singapore restaurants and hotels make it a practice to serve all guests with plain water, even when it has not been asked for.",
          "type": "quotation"
        },
        {
          "ref": "1979 October 2, New Nation: Water: Expensive, page 8",
          "text": "Someone asked for a glass of plain water and was told by the waitress: “That’ll be 60 cents.”",
          "type": "quotation"
        },
        {
          "ref": "1987 June 13, The Straits Times: Install Water Cooler, page 20",
          "text": "Although there is a food and drink stall inside, there are joggers like me who prefer to drink plain water after sweating it out of the tracks.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Tap water, either hot or cold, served in restaurants."
      ],
      "id": "en-plain_water-en-noun-K0st8vSz",
      "links": [
        [
          "Tap water",
          "tap water"
        ],
        [
          "restaurants",
          "restaurants"
        ]
      ],
      "raw_glosses": [
        "(Singapore) Tap water, either hot or cold, served in restaurants."
      ],
      "tags": [
        "Singapore",
        "uncountable"
      ]
    },
    {
      "categories": [
        {
          "kind": "other",
          "name": "Malaysian English",
          "parents": [],
          "source": "w"
        },
        {
          "_dis": "18 82",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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          "source": "w+disamb"
        }
      ],
      "glosses": [
        "Drinking water"
      ],
      "id": "en-plain_water-en-noun-owugYlbm",
      "links": [
        [
          "Drinking water",
          "drinking water"
        ]
      ],
      "raw_glosses": [
        "(Malaysia) Drinking water"
      ],
      "tags": [
        "Malaysia",
        "uncountable"
      ]
    }
  ],
  "word": "plain water"
}

{
  "categories": [
    "English entries with incorrect language header",
    "English lemmas",
    "English multiword terms",
    "English nouns",
    "English uncountable nouns"
  ],
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "plain water (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English terms with quotations",
        "Singapore English"
      ],
      "examples": [
        {
          "ref": "1971 June 17, The Straits Times, page 19",
          "text": "Politely I asked for a glass of plain water.",
          "type": "quotation"
        },
        {
          "ref": "1974 February 21, New Nation: Using Less Water, page 6",
          "text": "A visitor from Down Under is wondering why most Singapore restaurants and hotels make it a practice to serve all guests with plain water, even when it has not been asked for.",
          "type": "quotation"
        },
        {
          "ref": "1979 October 2, New Nation: Water: Expensive, page 8",
          "text": "Someone asked for a glass of plain water and was told by the waitress: “That’ll be 60 cents.”",
          "type": "quotation"
        },
        {
          "ref": "1987 June 13, The Straits Times: Install Water Cooler, page 20",
          "text": "Although there is a food and drink stall inside, there are joggers like me who prefer to drink plain water after sweating it out of the tracks.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Tap water, either hot or cold, served in restaurants."
      ],
      "links": [
        [
          "Tap water",
          "tap water"
        ],
        [
          "restaurants",
          "restaurants"
        ]
      ],
      "raw_glosses": [
        "(Singapore) Tap water, either hot or cold, served in restaurants."
      ],
      "tags": [
        "Singapore",
        "uncountable"
      ]
    },
    {
      "categories": [
        "Malaysian English"
      ],
      "glosses": [
        "Drinking water"
      ],
      "links": [
        [
          "Drinking water",
          "drinking water"
        ]
      ],
      "raw_glosses": [
        "(Malaysia) Drinking water"
      ],
      "tags": [
        "Malaysia",
        "uncountable"
      ]
    }
  ],
  "word": "plain water"
}