"grass grub" meaning in All languages combined

{
  "forms": [
    {
      "form": "grass grubs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "grass grub (plural grass grubs)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "New Zealand English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "lifeform",
          "langcode": "en",
          "name": "Scarabaeoids",
          "orig": "en:Scarabaeoids",
          "parents": [
            "Beetles",
            "Insects",
            "Arthropods",
            "Animals",
            "Lifeforms",
            "All topics",
            "Life",
            "Fundamental",
            "Nature"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A grub, Costelytra zealandica, that attacks the roots of grass causing pasture damage, regarded as an agricultural pest."
      ],
      "id": "en-grass_grub-en-noun-tx2MjHDJ",
      "raw_glosses": [
        "(New Zealand) A grub, Costelytra zealandica, that attacks the roots of grass causing pasture damage, regarded as an agricultural pest."
      ],
      "tags": [
        "New-Zealand"
      ],
      "translations": [
        {
          "code": "mi",
          "lang": "Maori",
          "sense": "A grub that attacks the roots of grass",
          "word": "tūtae ruru"
        }
      ]
    }
  ],
  "word": "grass grub"
}

{
  "forms": [
    {
      "form": "grass grubs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "grass grub (plural grass grubs)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "New Zealand English",
        "en:Scarabaeoids"
      ],
      "glosses": [
        "A grub, Costelytra zealandica, that attacks the roots of grass causing pasture damage, regarded as an agricultural pest."
      ],
      "raw_glosses": [
        "(New Zealand) A grub, Costelytra zealandica, that attacks the roots of grass causing pasture damage, regarded as an agricultural pest."
      ],
      "tags": [
        "New-Zealand"
      ]
    }
  ],
  "translations": [
    {
      "code": "mi",
      "lang": "Maori",
      "sense": "A grub that attacks the roots of grass",
      "word": "tūtae ruru"
    }
  ],
  "word": "grass grub"
}