"-cerco" meaning in Italian

{
  "etymology_templates": [
    {
      "args": {
        "1": "it",
        "2": "grc",
        "3": "κέρκος",
        "4": "",
        "5": "tail"
      },
      "expansion": "Ancient Greek κέρκος (kérkos, “tail”)",
      "name": "der"
    }
  ],
  "etymology_text": "From Ancient Greek κέρκος (kérkos, “tail”).",
  "head_templates": [
    {
      "args": {
        "1": "it",
        "2": "suffix"
      },
      "expansion": "-cerco",
      "name": "head"
    }
  ],
  "lang": "Italian",
  "lang_code": "it",
  "pos": "suffix",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Italian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "it",
          "name": "Zoology",
          "orig": "it:Zoology",
          "parents": [
            "Biology",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "tail"
      ],
      "id": "en--cerco-it-suffix-DGL4du8d",
      "links": [
        [
          "zoology",
          "zoology"
        ],
        [
          "tail",
          "tail"
        ]
      ],
      "raw_glosses": [
        "(zoology) tail"
      ],
      "tags": [
        "morpheme"
      ],
      "topics": [
        "biology",
        "natural-sciences",
        "zoology"
      ]
    }
  ],
  "word": "-cerco"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "it",
        "2": "grc",
        "3": "κέρκος",
        "4": "",
        "5": "tail"
      },
      "expansion": "Ancient Greek κέρκος (kérkos, “tail”)",
      "name": "der"
    }
  ],
  "etymology_text": "From Ancient Greek κέρκος (kérkos, “tail”).",
  "head_templates": [
    {
      "args": {
        "1": "it",
        "2": "suffix"
      },
      "expansion": "-cerco",
      "name": "head"
    }
  ],
  "lang": "Italian",
  "lang_code": "it",
  "pos": "suffix",
  "senses": [
    {
      "categories": [
        "Italian entries with incorrect language header",
        "Italian lemmas",
        "Italian suffixes",
        "Italian terms derived from Ancient Greek",
        "it:Zoology"
      ],
      "glosses": [
        "tail"
      ],
      "links": [
        [
          "zoology",
          "zoology"
        ],
        [
          "tail",
          "tail"
        ]
      ],
      "raw_glosses": [
        "(zoology) tail"
      ],
      "tags": [
        "morpheme"
      ],
      "topics": [
        "biology",
        "natural-sciences",
        "zoology"
      ]
    }
  ],
  "word": "-cerco"
}