"reh'g" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "?"
      },
      "expansion": "reh'g",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "rehearing"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with language name categories using raw markup",
          "parents": [
            "Entries with language name categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Law",
          "orig": "en:Law",
          "parents": [
            "Justice",
            "Society",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Abbreviation of rehearing."
      ],
      "id": "en-reh'g-en-noun-Ofu5Tc9g",
      "links": [
        [
          "law",
          "law#English"
        ],
        [
          "rehearing",
          "rehearing#English"
        ]
      ],
      "raw_glosses": [
        "(law) Abbreviation of rehearing."
      ],
      "tags": [
        "abbreviation",
        "alt-of"
      ],
      "topics": [
        "law"
      ]
    }
  ],
  "word": "reh'g"
}

{
  "head_templates": [
    {
      "args": {
        "1": "?"
      },
      "expansion": "reh'g",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "rehearing"
        }
      ],
      "categories": [
        "English abbreviations",
        "English case citation abbreviations",
        "English countable nouns",
        "English entries with incorrect language header",
        "English entries with language name categories using raw markup",
        "English lemmas",
        "English nouns",
        "English nouns with unknown or uncertain plurals",
        "English terms with non-redundant non-automated sortkeys",
        "en:Law"
      ],
      "glosses": [
        "Abbreviation of rehearing."
      ],
      "links": [
        [
          "law",
          "law#English"
        ],
        [
          "rehearing",
          "rehearing#English"
        ]
      ],
      "raw_glosses": [
        "(law) Abbreviation of rehearing."
      ],
      "tags": [
        "abbreviation",
        "alt-of"
      ],
      "topics": [
        "law"
      ]
    }
  ],
  "word": "reh'g"
}