"-il" meaning in Spanish

{
  "etymology_templates": [
    {
      "args": {
        "1": "es",
        "2": "la",
        "3": "-īlis"
      },
      "expansion": "Latin -īlis",
      "name": "der"
    }
  ],
  "etymology_text": "From Latin -īlis.",
  "forms": [
    {
      "form": "-iles",
      "tags": [
        "feminine",
        "masculine",
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "-il m or f (adjective-forming suffix, masculine and feminine plural -iles)",
      "name": "es-adj"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "suffix",
  "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 suffixes with multiple genders",
          "parents": [
            "Suffixes with multiple genders",
            "Suffixes by gender",
            "Suffixes",
            "Morphemes",
            "Lemmas"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "-ile (indicating relation or pertaining to)"
      ],
      "id": "en--il-es-suffix-YiMRhsrY",
      "links": [
        [
          "-ile",
          "-ile"
        ]
      ],
      "related": [
        {
          "word": "-al"
        },
        {
          "word": "-ero"
        }
      ],
      "tags": [
        "feminine",
        "masculine",
        "morpheme"
      ]
    }
  ],
  "word": "-il"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "es",
        "2": "la",
        "3": "-īlis"
      },
      "expansion": "Latin -īlis",
      "name": "der"
    }
  ],
  "etymology_text": "From Latin -īlis.",
  "forms": [
    {
      "form": "-iles",
      "tags": [
        "feminine",
        "masculine",
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "-il m or f (adjective-forming suffix, masculine and feminine plural -iles)",
      "name": "es-adj"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "suffix",
  "related": [
    {
      "word": "-al"
    },
    {
      "word": "-ero"
    }
  ],
  "senses": [
    {
      "categories": [
        "Spanish adjective-forming suffixes",
        "Spanish entries with incorrect language header",
        "Spanish epicene suffixes",
        "Spanish feminine suffixes",
        "Spanish lemmas",
        "Spanish masculine suffixes",
        "Spanish suffixes",
        "Spanish suffixes with multiple genders",
        "Spanish terms derived from Latin"
      ],
      "glosses": [
        "-ile (indicating relation or pertaining to)"
      ],
      "links": [
        [
          "-ile",
          "-ile"
        ]
      ],
      "tags": [
        "feminine",
        "masculine",
        "morpheme"
      ]
    }
  ],
  "word": "-il"
}