"reyndu" meaning in Icelandic

{
  "head_templates": [
    {
      "args": {
        "1": "is",
        "2": "verb form"
      },
      "expansion": "reyndu",
      "name": "head"
    }
  ],
  "lang": "Icelandic",
  "lang_code": "is",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Icelandic entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "_dis": "46 22 20 12",
          "kind": "other",
          "name": "Old Norse entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "form_of": [
        {
          "word": "reyna"
        }
      ],
      "glosses": [
        "imperative of reyna"
      ],
      "id": "en-reyndu-is-verb-iLPAzx-o",
      "links": [
        [
          "reyna",
          "reyna#Icelandic"
        ]
      ],
      "tags": [
        "form-of",
        "imperative"
      ]
    }
  ],
  "word": "reyndu"
}

{
  "categories": [
    "Old Norse entries with incorrect language header",
    "Old Norse non-lemma forms",
    "Old Norse participle forms"
  ],
  "head_templates": [
    {
      "args": {
        "1": "is",
        "2": "verb form"
      },
      "expansion": "reyndu",
      "name": "head"
    }
  ],
  "lang": "Icelandic",
  "lang_code": "is",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "Icelandic entries with incorrect language header",
        "Icelandic non-lemma forms",
        "Icelandic verb forms"
      ],
      "form_of": [
        {
          "word": "reyna"
        }
      ],
      "glosses": [
        "imperative of reyna"
      ],
      "links": [
        [
          "reyna",
          "reyna#Icelandic"
        ]
      ],
      "tags": [
        "form-of",
        "imperative"
      ]
    }
  ],
  "word": "reyndu"
}