"N/D" meaning in All languages combined

{
  "forms": [
    {
      "form": "D",
      "tags": [
        "canonical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "?"
      },
      "expansion": "D",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "non-drinker"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "Coordinate term: N/S"
        },
        {
          "ref": "1982 December 11, “Classified Want Ads: Companions [personal ad]”, in The Vancouver Sun (The Weekend Sun), Vancouver, BC, page E6",
          "text": "Gent. early 40’s, a N/S, N/D, from the Okanagan Valley, wishes to meet a lady 34 to 40 for social or leading to permanent relationship.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Initialism of non-drinker."
      ],
      "id": "en-N/D-en-noun-ULSTK4Ap",
      "links": [
        [
          "personal ad",
          "personal ad"
        ],
        [
          "non-drinker",
          "non-drinker#English"
        ]
      ],
      "raw_glosses": [
        "(in personal ads) Initialism of non-drinker."
      ],
      "raw_tags": [
        "in personal ads"
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "initialism"
      ]
    }
  ],
  "word": "N/D"
}

{
  "forms": [
    {
      "form": "D",
      "tags": [
        "canonical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "?"
      },
      "expansion": "D",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "non-drinker"
        }
      ],
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English initialisms",
        "English lemmas",
        "English nouns",
        "English nouns with unknown or uncertain plurals",
        "English terms with quotations",
        "English words without vowels"
      ],
      "examples": [
        {
          "text": "Coordinate term: N/S"
        },
        {
          "ref": "1982 December 11, “Classified Want Ads: Companions [personal ad]”, in The Vancouver Sun (The Weekend Sun), Vancouver, BC, page E6",
          "text": "Gent. early 40’s, a N/S, N/D, from the Okanagan Valley, wishes to meet a lady 34 to 40 for social or leading to permanent relationship.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Initialism of non-drinker."
      ],
      "links": [
        [
          "personal ad",
          "personal ad"
        ],
        [
          "non-drinker",
          "non-drinker#English"
        ]
      ],
      "raw_glosses": [
        "(in personal ads) Initialism of non-drinker."
      ],
      "raw_tags": [
        "in personal ads"
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "initialism"
      ]
    }
  ],
  "word": "N/D"
}