"loosening up" meaning in English

{
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      "expansion": "loosening up",
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  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
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          "_dis": "5 95",
          "kind": "other",
          "name": "English entries with incorrect language header",
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          "source": "w+disamb"
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      ],
      "form_of": [
        {
          "word": "loosen up"
        }
      ],
      "glosses": [
        "present participle and gerund of loosen up"
      ],
      "id": "en-loosening_up-en-verb-2zhDBca1",
      "links": [
        [
          "loosen up",
          "loosen up#English"
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        "form-of",
        "gerund",
        "participle",
        "present"
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  ],
  "word": "loosening up"
}

{
  "forms": [
    {
      "form": "loosening ups",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
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      "expansion": "loosening up (countable and uncountable, plural loosening ups)",
      "name": "en-noun"
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [],
      "examples": [
        {
          "ref": "1994, Jim Ranie, Jargodin: The Moonlighter, Brisbane: Jim Ranie, page 152",
          "text": "His hands by his sides he shook them in a loosening up exercise.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "The action of relaxing, especially relaxing the muscles before exercise, sport, etc."
      ],
      "id": "en-loosening_up-en-noun-EK9MzlFc",
      "links": [
        [
          "relaxing",
          "relaxing"
        ],
        [
          "muscles",
          "muscles"
        ],
        [
          "exercise",
          "exercise"
        ],
        [
          "sport",
          "sport"
        ]
      ],
      "tags": [
        "countable",
        "uncountable"
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    }
  ],
  "word": "loosening up"
}

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  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "form_of": [
        {
          "word": "loosen up"
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      ],
      "glosses": [
        "present participle and gerund of loosen up"
      ],
      "links": [
        [
          "loosen up",
          "loosen up#English"
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      "tags": [
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  "word": "loosening up"
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    "English nouns",
    "English uncountable nouns",
    "English verb forms"
  ],
  "forms": [
    {
      "form": "loosening ups",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
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      "expansion": "loosening up (countable and uncountable, plural loosening ups)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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      "examples": [
        {
          "ref": "1994, Jim Ranie, Jargodin: The Moonlighter, Brisbane: Jim Ranie, page 152",
          "text": "His hands by his sides he shook them in a loosening up exercise.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "The action of relaxing, especially relaxing the muscles before exercise, sport, etc."
      ],
      "links": [
        [
          "relaxing",
          "relaxing"
        ],
        [
          "muscles",
          "muscles"
        ],
        [
          "exercise",
          "exercise"
        ],
        [
          "sport",
          "sport"
        ]
      ],
      "tags": [
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  "word": "loosening up"
}