"an uair sin" meaning in Scottish Gaelic

{
  "head_templates": [
    {
      "args": {
        "1": "gd",
        "2": "adverb"
      },
      "expansion": "an uair sin",
      "name": "head"
    }
  ],
  "lang": "Scottish Gaelic",
  "lang_code": "gd",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Scottish Gaelic entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "then (at that time)"
      ],
      "id": "en-an_uair_sin-gd-adv-WxZPpoRq",
      "synonyms": [
        {
          "word": "an uairsin"
        }
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/(ə)n̪ˠ ˈuəɾˠʃɪn/"
    },
    {
      "ipa": "/(ə)n̪ˠ ˈuəɾˠs̪ən/",
      "note": "Uist"
    }
  ],
  "word": "an uair sin"
}

{
  "head_templates": [
    {
      "args": {
        "1": "gd",
        "2": "adverb"
      },
      "expansion": "an uair sin",
      "name": "head"
    }
  ],
  "lang": "Scottish Gaelic",
  "lang_code": "gd",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        "Scottish Gaelic adverbs",
        "Scottish Gaelic entries with incorrect language header",
        "Scottish Gaelic lemmas",
        "Scottish Gaelic multiword terms",
        "Scottish Gaelic terms with IPA pronunciation"
      ],
      "glosses": [
        "then (at that time)"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/(ə)n̪ˠ ˈuəɾˠʃɪn/"
    },
    {
      "ipa": "/(ə)n̪ˠ ˈuəɾˠs̪ən/",
      "note": "Uist"
    }
  ],
  "synonyms": [
    {
      "word": "an uairsin"
    }
  ],
  "word": "an uair sin"
}