"ní b'" meaning in Irish

{
  "forms": [
    {
      "form": "ní b’",
      "tags": [
        "canonical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ga",
        "2": "particle",
        "3": "triggers lenition; used before a vowel sound",
        "head": "ní b’"
      },
      "expansion": "ní b’ (triggers lenition; used before a vowel sound)",
      "name": "head"
    }
  ],
  "lang": "Irish",
  "lang_code": "ga",
  "pos": "particle",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Irish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Irish particles",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "english": "The boy was younger than James.",
          "text": "Bhí an buachaill ní b’óige ná Séamas.",
          "type": "example"
        },
        {
          "text": "Bhí an cáilín ní b’fheargaí ná Niamh.\nThe girl was angrier than Niamh.",
          "type": "example"
        }
      ],
      "form_of": [
        {
          "extra": "particle used with the comparative/superlative form of adjectives to form the simple comparative",
          "word": "níos"
        }
      ],
      "glosses": [
        "past tense of níos (particle used with the comparative/superlative form of adjectives to form the simple comparative)"
      ],
      "id": "en-ní_b'-ga-particle-S5yuvAj2",
      "links": [
        [
          "níos",
          "níos#Irish"
        ],
        [
          "comparative",
          "comparative"
        ]
      ],
      "synonyms": [
        {
          "english": "before a consonant sound",
          "word": "ní ba"
        }
      ],
      "tags": [
        "form-of",
        "past",
        "triggers-lenition"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/n̠ʲiːbˠ/",
      "note": "fhu"
    },
    {
      "ipa": "/n̠ʲiːbʲ/",
      "note": "fhi"
    }
  ],
  "word": "ní b'"
}

{
  "forms": [
    {
      "form": "ní b’",
      "tags": [
        "canonical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ga",
        "2": "particle",
        "3": "triggers lenition; used before a vowel sound",
        "head": "ní b’"
      },
      "expansion": "ní b’ (triggers lenition; used before a vowel sound)",
      "name": "head"
    }
  ],
  "lang": "Irish",
  "lang_code": "ga",
  "pos": "particle",
  "senses": [
    {
      "categories": [
        "Irish entries with incorrect language header",
        "Irish lemmas",
        "Irish multiword terms",
        "Irish particles",
        "Irish terms with usage examples",
        "Pages with 1 entry"
      ],
      "examples": [
        {
          "english": "The boy was younger than James.",
          "text": "Bhí an buachaill ní b’óige ná Séamas.",
          "type": "example"
        },
        {
          "text": "Bhí an cáilín ní b’fheargaí ná Niamh.\nThe girl was angrier than Niamh.",
          "type": "example"
        }
      ],
      "form_of": [
        {
          "extra": "particle used with the comparative/superlative form of adjectives to form the simple comparative",
          "word": "níos"
        }
      ],
      "glosses": [
        "past tense of níos (particle used with the comparative/superlative form of adjectives to form the simple comparative)"
      ],
      "links": [
        [
          "níos",
          "níos#Irish"
        ],
        [
          "comparative",
          "comparative"
        ]
      ],
      "tags": [
        "form-of",
        "past",
        "triggers-lenition"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/n̠ʲiːbˠ/",
      "note": "fhu"
    },
    {
      "ipa": "/n̠ʲiːbʲ/",
      "note": "fhi"
    }
  ],
  "synonyms": [
    {
      "english": "before a consonant sound",
      "word": "ní ba"
    }
  ],
  "word": "ní b'"
}

{
  "called_from": "form_descriptions/1698",
  "msg": "unrecognized head form: used before a vowel sound",
  "path": [
    "ní b'"
  ],
  "section": "Irish",
  "subsection": "particle",
  "title": "ní b'",
  "trace": ""
}