"pregrinding" meaning in English

{
  "etymology_number": 1,
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "pregrind",
        "3": "ing",
        "pos2": "participle ending"
      },
      "expansion": "pregrind + -ing (participle ending)",
      "name": "suffix"
    }
  ],
  "etymology_text": "From pregrind + -ing (participle ending).",
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "verb form"
      },
      "expansion": "pregrinding",
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "_dis": "44 56",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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          "source": "w+disamb"
        },
        {
          "_dis": "46 54",
          "kind": "other",
          "name": "English terms prefixed with pre-",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "44 56",
          "kind": "other",
          "name": "English terms suffixed with -ing",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "form_of": [
        {
          "word": "pregrind"
        }
      ],
      "glosses": [
        "present participle and gerund of pregrind"
      ],
      "id": "en-pregrinding-en-verb-XA5NT24u",
      "links": [
        [
          "pregrind",
          "pregrind#English"
        ]
      ],
      "tags": [
        "form-of",
        "gerund",
        "participle",
        "present"
      ]
    }
  ],
  "word": "pregrinding"
}

{
  "etymology_number": 2,
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "pregrind",
        "3": "ing",
        "pos2": "gerund ending"
      },
      "expansion": "pregrind + -ing (gerund ending)",
      "name": "suffix"
    },
    {
      "args": {
        "1": "en",
        "2": "pre",
        "3": "grinding"
      },
      "expansion": "pre- + grinding",
      "name": "prefix"
    }
  ],
  "etymology_text": "From pregrind + -ing (gerund ending); or perhaps from pre- + grinding.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "pregrinding (uncountable)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "_dis": "46 54",
          "kind": "other",
          "name": "English terms prefixed with pre-",
          "parents": [],
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        }
      ],
      "glosses": [
        "The grinding of something prior to use."
      ],
      "id": "en-pregrinding-en-noun-x9-A36Ug",
      "links": [
        [
          "grinding",
          "grinding"
        ]
      ],
      "tags": [
        "uncountable"
      ]
    }
  ],
  "word": "pregrinding"
}

{
  "categories": [
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    "English lemmas",
    "English non-lemma forms",
    "English nouns",
    "English terms prefixed with pre-",
    "English terms suffixed with -ing",
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  "etymology_number": 1,
  "etymology_templates": [
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      "args": {
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        "2": "pregrind",
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      "expansion": "pregrind + -ing (participle ending)",
      "name": "suffix"
    }
  ],
  "etymology_text": "From pregrind + -ing (participle ending).",
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "verb form"
      },
      "expansion": "pregrinding",
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  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
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        {
          "word": "pregrind"
        }
      ],
      "glosses": [
        "present participle and gerund of pregrind"
      ],
      "links": [
        [
          "pregrind",
          "pregrind#English"
        ]
      ],
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        "form-of",
        "gerund",
        "participle",
        "present"
      ]
    }
  ],
  "word": "pregrinding"
}

{
  "categories": [
    "English entries with incorrect language header",
    "English lemmas",
    "English nouns",
    "English terms prefixed with pre-",
    "English terms suffixed with -ing",
    "English uncountable nouns"
  ],
  "etymology_number": 2,
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "pregrind",
        "3": "ing",
        "pos2": "gerund ending"
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      "expansion": "pregrind + -ing (gerund ending)",
      "name": "suffix"
    },
    {
      "args": {
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        "2": "pre",
        "3": "grinding"
      },
      "expansion": "pre- + grinding",
      "name": "prefix"
    }
  ],
  "etymology_text": "From pregrind + -ing (gerund ending); or perhaps from pre- + grinding.",
  "head_templates": [
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      "args": {
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      "expansion": "pregrinding (uncountable)",
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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    {
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        "The grinding of something prior to use."
      ],
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        [
          "grinding",
          "grinding"
        ]
      ],
      "tags": [
        "uncountable"
      ]
    }
  ],
  "word": "pregrinding"
}