"cosilla" meaning in Spanish

{
  "etymology_templates": [
    {
      "args": {
        "1": "es",
        "2": "cosa",
        "3": "illa"
      },
      "expansion": "cosa + -illa",
      "name": "suffix"
    }
  ],
  "etymology_text": "From cosa + -illa.",
  "forms": [
    {
      "form": "cosillas",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "f"
      },
      "expansion": "cosilla f (plural cosillas)",
      "name": "es-noun"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Spanish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Spanish terms suffixed with -illa",
          "parents": [],
          "source": "w"
        }
      ],
      "form_of": [
        {
          "extra": "small thing, little thing",
          "word": "cosa"
        }
      ],
      "glosses": [
        "Diminutive of cosa; small thing, little thing"
      ],
      "id": "en-cosilla-es-noun-ehVDPh8j",
      "links": [
        [
          "cosa",
          "cosa#Spanish"
        ],
        [
          "thing",
          "thing"
        ]
      ],
      "tags": [
        "diminutive",
        "feminine",
        "form-of"
      ]
    }
  ],
  "word": "cosilla"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "es",
        "2": "cosa",
        "3": "illa"
      },
      "expansion": "cosa + -illa",
      "name": "suffix"
    }
  ],
  "etymology_text": "From cosa + -illa.",
  "forms": [
    {
      "form": "cosillas",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "f"
      },
      "expansion": "cosilla f (plural cosillas)",
      "name": "es-noun"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Spanish countable nouns",
        "Spanish diminutive nouns",
        "Spanish entries with incorrect language header",
        "Spanish feminine nouns",
        "Spanish lemmas",
        "Spanish nouns",
        "Spanish terms suffixed with -illa"
      ],
      "form_of": [
        {
          "extra": "small thing, little thing",
          "word": "cosa"
        }
      ],
      "glosses": [
        "Diminutive of cosa; small thing, little thing"
      ],
      "links": [
        [
          "cosa",
          "cosa#Spanish"
        ],
        [
          "thing",
          "thing"
        ]
      ],
      "tags": [
        "diminutive",
        "feminine",
        "form-of"
      ]
    }
  ],
  "word": "cosilla"
}