"beta" meaning in Old Irish

{
  "head_templates": [
    {
      "args": {
        "1": "sga",
        "2": "verb form"
      },
      "expansion": "beta",
      "name": "head"
    }
  ],
  "lang": "Old Irish",
  "lang_code": "sga",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Old Irish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "english": "Although they are compounds in Greek (lit. “with the Greeks”), it is not necessary for us that they be compounds in our language (lit. “with us”).",
          "text": "Cit comṡuidigthi la Grécu ní écen dúnni beta comṡuidigthi linn.",
          "type": "quotation"
        }
      ],
      "form_of": [
        {
          "word": "is"
        }
      ],
      "glosses": [
        "third-person plural present subjunctive relative of is"
      ],
      "id": "en-beta-sga-verb-sNeXglT0",
      "links": [
        [
          "is",
          "is#Old Irish"
        ]
      ],
      "synonyms": [
        {
          "word": "bete"
        }
      ],
      "tags": [
        "form-of",
        "plural",
        "present",
        "relative",
        "subjunctive",
        "third-person"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈbʲeda/"
    }
  ],
  "word": "beta"
}

{
  "categories": [
    "sv:Greek letter names",
    "sv:Vegetables"
  ],
  "head_templates": [
    {
      "args": {
        "1": "sga",
        "2": "verb form"
      },
      "expansion": "beta",
      "name": "head"
    }
  ],
  "lang": "Old Irish",
  "lang_code": "sga",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "Old Irish entries with incorrect language header",
        "Old Irish non-lemma forms",
        "Old Irish terms with IPA pronunciation",
        "Old Irish terms with quotations",
        "Old Irish verb forms"
      ],
      "examples": [
        {
          "english": "Although they are compounds in Greek (lit. “with the Greeks”), it is not necessary for us that they be compounds in our language (lit. “with us”).",
          "text": "Cit comṡuidigthi la Grécu ní écen dúnni beta comṡuidigthi linn.",
          "type": "quotation"
        }
      ],
      "form_of": [
        {
          "word": "is"
        }
      ],
      "glosses": [
        "third-person plural present subjunctive relative of is"
      ],
      "links": [
        [
          "is",
          "is#Old Irish"
        ]
      ],
      "tags": [
        "form-of",
        "plural",
        "present",
        "relative",
        "subjunctive",
        "third-person"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈbʲeda/"
    }
  ],
  "synonyms": [
    {
      "word": "bete"
    }
  ],
  "word": "beta"
}