"rivering" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "verb form"
      },
      "expansion": "rivering",
      "name": "head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
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          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Poker",
          "orig": "en:Poker",
          "parents": [
            "Card games",
            "Gambling",
            "Games",
            "Recreation",
            "Human activity",
            "Human behaviour",
            "Human",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "form_of": [
        {
          "word": "river"
        }
      ],
      "glosses": [
        "present participle and gerund of river"
      ],
      "id": "en-rivering-en-verb--zsMVfSh",
      "links": [
        [
          "poker",
          "poker"
        ],
        [
          "river",
          "river#English"
        ]
      ],
      "raw_glosses": [
        "(poker) present participle and gerund of river"
      ],
      "tags": [
        "form-of",
        "gerund",
        "participle",
        "present"
      ],
      "topics": [
        "card-games",
        "poker"
      ]
    }
  ],
  "word": "rivering"
}

{
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "verb form"
      },
      "expansion": "rivering",
      "name": "head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English non-lemma forms",
        "English verb forms",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Poker"
      ],
      "form_of": [
        {
          "word": "river"
        }
      ],
      "glosses": [
        "present participle and gerund of river"
      ],
      "links": [
        [
          "poker",
          "poker"
        ],
        [
          "river",
          "river#English"
        ]
      ],
      "raw_glosses": [
        "(poker) present participle and gerund of river"
      ],
      "tags": [
        "form-of",
        "gerund",
        "participle",
        "present"
      ],
      "topics": [
        "card-games",
        "poker"
      ]
    }
  ],
  "word": "rivering"
}