"一つ" meaning in Japonês

{
  "categories": [
    {
      "kind": "other",
      "name": "!Entrada (Japonês)",
      "parents": [],
      "source": "w"
    }
  ],
  "derived": [
    {
      "word": "一つ一つ"
    },
    {
      "word": "一つ置き"
    }
  ],
  "lang": "Japonês",
  "lang_code": "ja",
  "pos": "noun",
  "pos_title": "Substantivo",
  "senses": [
    {
      "glosses": [
        "um, uma"
      ],
      "id": "pt-一つ-ja-noun-yKbj76TG"
    },
    {
      "glosses": [
        "só, somente, unicamente"
      ],
      "id": "pt-一つ-ja-noun-mSuHlqBn"
    },
    {
      "glosses": [
        "qualquer, nada, nenhum"
      ],
      "id": "pt-一つ-ja-noun-b6bniQkL"
    }
  ],
  "word": "一つ"
}

{
  "categories": [
    "!Entrada (Japonês)"
  ],
  "derived": [
    {
      "word": "一つ一つ"
    },
    {
      "word": "一つ置き"
    }
  ],
  "lang": "Japonês",
  "lang_code": "ja",
  "pos": "noun",
  "pos_title": "Substantivo",
  "senses": [
    {
      "glosses": [
        "um, uma"
      ]
    },
    {
      "glosses": [
        "só, somente, unicamente"
      ]
    },
    {
      "glosses": [
        "qualquer, nada, nenhum"
      ]
    }
  ],
  "word": "一つ"
}