"flaskless" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "flask",
        "3": "less"
      },
      "expansion": "flask + -less",
      "name": "suffix"
    }
  ],
  "etymology_text": "From flask + -less.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "flaskless (not comparable)",
      "name": "en-adj"
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  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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          "source": "w"
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          "name": "English terms suffixed with -less",
          "parents": [],
          "source": "w"
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          "parents": [],
          "source": "w"
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          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Engineering",
          "orig": "en:Engineering",
          "parents": [
            "Applied sciences",
            "Technology",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Without a flask (container for holding a casting mold)."
      ],
      "id": "en-flaskless-en-adj-RhYPlDSB",
      "links": [
        [
          "engineering",
          "engineering#Noun"
        ],
        [
          "flask",
          "flask"
        ],
        [
          "casting",
          "casting"
        ],
        [
          "mold",
          "mold"
        ]
      ],
      "raw_glosses": [
        "(engineering) Without a flask (container for holding a casting mold)."
      ],
      "tags": [
        "not-comparable"
      ],
      "topics": [
        "engineering",
        "natural-sciences",
        "physical-sciences"
      ]
    }
  ],
  "word": "flaskless"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "flask",
        "3": "less"
      },
      "expansion": "flask + -less",
      "name": "suffix"
    }
  ],
  "etymology_text": "From flask + -less.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "flaskless (not comparable)",
      "name": "en-adj"
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  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
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        "English lemmas",
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        "en:Engineering"
      ],
      "glosses": [
        "Without a flask (container for holding a casting mold)."
      ],
      "links": [
        [
          "engineering",
          "engineering#Noun"
        ],
        [
          "flask",
          "flask"
        ],
        [
          "casting",
          "casting"
        ],
        [
          "mold",
          "mold"
        ]
      ],
      "raw_glosses": [
        "(engineering) Without a flask (container for holding a casting mold)."
      ],
      "tags": [
        "not-comparable"
      ],
      "topics": [
        "engineering",
        "natural-sciences",
        "physical-sciences"
      ]
    }
  ],
  "word": "flaskless"
}