"sub-excavation" meaning in English

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        "2": "sub",
        "3": "excavation"
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      "expansion": "sub- + excavation",
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  ],
  "etymology_text": "From sub- + excavation.",
  "forms": [
    {
      "form": "sub-excavations",
      "tags": [
        "plural"
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  "head_templates": [
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      "expansion": "sub-excavation (plural sub-excavations)",
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  "lang_code": "en",
  "pos": "noun",
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      "examples": [
        {
          "text": "We were grading the road and found a soft spot where we did a sub-excavation.",
          "type": "example"
        }
      ],
      "glosses": [
        "An excavation underneath something, or the excavation of a subgrade"
      ],
      "id": "en-sub-excavation-en-noun-YSTB3-UT",
      "links": [
        [
          "excavation",
          "excavation"
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        [
          "subgrade",
          "subgrade"
        ]
      ],
      "related": [
        {
          "tags": [
            "short-form"
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          "word": "sub-ex"
        },
        {
          "word": "sub-excavate"
        },
        {
          "word": "sub-excavated"
        }
      ],
      "synonyms": [
        {
          "word": "subexcavation"
        }
      ]
    }
  ],
  "word": "sub-excavation"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "sub",
        "3": "excavation"
      },
      "expansion": "sub- + excavation",
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    }
  ],
  "etymology_text": "From sub- + excavation.",
  "forms": [
    {
      "form": "sub-excavations",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "sub-excavation (plural sub-excavations)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "tags": [
        "short-form"
      ],
      "word": "sub-ex"
    },
    {
      "word": "sub-excavate"
    },
    {
      "word": "sub-excavated"
    }
  ],
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        {
          "text": "We were grading the road and found a soft spot where we did a sub-excavation.",
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        }
      ],
      "glosses": [
        "An excavation underneath something, or the excavation of a subgrade"
      ],
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          "excavation",
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          "subgrade",
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  "synonyms": [
    {
      "word": "subexcavation"
    }
  ],
  "word": "sub-excavation"
}