"test bed" meaning in English

{
  "forms": [
    {
      "form": "test beds",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "test bed (plural test beds)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "testbed"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "Since that set of articles is already fairly complete, they might serve as a good test bed for the different organizational systems we want to try.",
          "type": "example"
        },
        {
          "ref": "1961 March, “English Electric gas turbine locomotive begins trials”, in Trains Illustrated, page 152:",
          "text": "Although its wheel size and arrangement seem far from ideal for a high-powered modern motive power unit, No. GT3 is clearly intended as far more than just another travelling test-bed.",
          "type": "quote"
        },
        {
          "ref": "2023 February 22, Howard Johnston, “Southern '313s': is the end now in sight?”, in RAIL, number 977, page 43:",
          "text": "It was taken out of passenger service in early 2013, for conversion into a test bed for the commissioning of the European Rail Traffic Management System (ERTMS) on the Hertford Loop and elsewhere.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Alternative form of testbed"
      ],
      "id": "en-test_bed-en-noun-h3Vm3Gv4",
      "links": [
        [
          "testbed",
          "testbed#English"
        ]
      ],
      "raw_glosses": [
        "(idiomatic) Alternative form of testbed"
      ],
      "tags": [
        "alt-of",
        "alternative",
        "idiomatic"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "En-au-test bed.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/5/51/En-au-test_bed.ogg/En-au-test_bed.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/5/51/En-au-test_bed.ogg"
    }
  ],
  "word": "test bed"
}

{
  "forms": [
    {
      "form": "test beds",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "test bed (plural test beds)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "testbed"
        }
      ],
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English idioms",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations",
        "English terms with usage examples",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "text": "Since that set of articles is already fairly complete, they might serve as a good test bed for the different organizational systems we want to try.",
          "type": "example"
        },
        {
          "ref": "1961 March, “English Electric gas turbine locomotive begins trials”, in Trains Illustrated, page 152:",
          "text": "Although its wheel size and arrangement seem far from ideal for a high-powered modern motive power unit, No. GT3 is clearly intended as far more than just another travelling test-bed.",
          "type": "quote"
        },
        {
          "ref": "2023 February 22, Howard Johnston, “Southern '313s': is the end now in sight?”, in RAIL, number 977, page 43:",
          "text": "It was taken out of passenger service in early 2013, for conversion into a test bed for the commissioning of the European Rail Traffic Management System (ERTMS) on the Hertford Loop and elsewhere.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Alternative form of testbed"
      ],
      "links": [
        [
          "testbed",
          "testbed#English"
        ]
      ],
      "raw_glosses": [
        "(idiomatic) Alternative form of testbed"
      ],
      "tags": [
        "alt-of",
        "alternative",
        "idiomatic"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "En-au-test bed.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/5/51/En-au-test_bed.ogg/En-au-test_bed.ogg.mp3",
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  ],
  "word": "test bed"
}