"etab." meaning in Basque

{
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "etab. (not comparable)",
      "name": "eu-adv"
    }
  ],
  "lang": "Basque",
  "lang_code": "eu",
  "pos": "adv",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "et cetera",
          "word": "eta abar"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "Basque entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Abbreviation of eta abar (“et cetera”)."
      ],
      "id": "en-etab.-eu-adv-~3oGrGgz",
      "links": [
        [
          "eta abar",
          "eta abar#Basque"
        ]
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "not-comparable"
      ]
    }
  ],
  "word": "etab."
}

{
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "etab. (not comparable)",
      "name": "eu-adv"
    }
  ],
  "lang": "Basque",
  "lang_code": "eu",
  "pos": "adv",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "et cetera",
          "word": "eta abar"
        }
      ],
      "categories": [
        "Basque abbreviations",
        "Basque adverbs",
        "Basque entries with incorrect language header",
        "Basque lemmas",
        "Basque terms spelled with .",
        "Basque uncomparable adverbs"
      ],
      "glosses": [
        "Abbreviation of eta abar (“et cetera”)."
      ],
      "links": [
        [
          "eta abar",
          "eta abar#Basque"
        ]
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "not-comparable"
      ]
    }
  ],
  "word": "etab."
}