"ĉefdukoj" meaning in Esperanto

{
  "head_templates": [
    {
      "args": {},
      "expansion": "ĉefdukoj",
      "name": "eo-head"
    }
  ],
  "hyphenation": [
    "ĉef‧du‧koj"
  ],
  "lang": "Esperanto",
  "lang_code": "eo",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Esperanto entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "IPA pronunciations with invalid phonemes/eo",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "form_of": [
        {
          "word": "ĉefduko"
        }
      ],
      "glosses": [
        "plural of ĉefduko"
      ],
      "id": "en-ĉefdukoj-eo-noun-f~mPiEop",
      "links": [
        [
          "ĉefduko",
          "ĉefduko#Esperanto"
        ]
      ],
      "tags": [
        "form-of",
        "plural"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/t͡ʃefˈdukoi̯/"
    },
    {
      "rhymes": "-ukoi̯"
    }
  ],
  "word": "ĉefdukoj"
}

{
  "head_templates": [
    {
      "args": {},
      "expansion": "ĉefdukoj",
      "name": "eo-head"
    }
  ],
  "hyphenation": [
    "ĉef‧du‧koj"
  ],
  "lang": "Esperanto",
  "lang_code": "eo",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Esperanto 3-syllable words",
        "Esperanto entries with incorrect language header",
        "Esperanto non-lemma forms",
        "Esperanto noun forms",
        "Esperanto terms with IPA pronunciation",
        "IPA pronunciations with invalid phonemes/eo",
        "Pages with 1 entry",
        "Pages with entries",
        "Rhymes:Esperanto/ukoi̯"
      ],
      "form_of": [
        {
          "word": "ĉefduko"
        }
      ],
      "glosses": [
        "plural of ĉefduko"
      ],
      "links": [
        [
          "ĉefduko",
          "ĉefduko#Esperanto"
        ]
      ],
      "tags": [
        "form-of",
        "plural"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/t͡ʃefˈdukoi̯/"
    },
    {
      "rhymes": "-ukoi̯"
    }
  ],
  "word": "ĉefdukoj"
}