"kaj" meaning in Esperanto

{
  "etymology_templates": [
    {
      "args": {
        "1": "eo",
        "2": "grc",
        "3": "καί"
      },
      "expansion": "Ancient Greek καί (kaí)",
      "name": "bor"
    }
  ],
  "etymology_text": "Borrowed from Ancient Greek καί (kaí).",
  "head_templates": [
    {
      "args": {
        "1": "eo",
        "2": "conj"
      },
      "expansion": "kaj",
      "name": "head"
    }
  ],
  "hyphenation": [
    "kaj"
  ],
  "lang": "Esperanto",
  "lang_code": "eo",
  "pos": "conj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Esperanto 1894 Universala Vortaro",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Esperanto BRO1",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Esperanto GCSE0",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Esperanto entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Words approved by the Akademio de Esperanto",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "english": "I want a pizza and a soft drink.",
          "text": "Mi volas picon kaj refreŝigaĵon.",
          "type": "example"
        }
      ],
      "glosses": [
        "and (additionally)"
      ],
      "id": "en-kaj-eo-conj-WDucHUR3",
      "links": [
        [
          "and",
          "and#English"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[kaj]"
    }
  ],
  "word": "kaj"
}

{
  "categories": [
    "White Hmong adjectives",
    "White Hmong doublets",
    "White Hmong entries with incorrect language header",
    "White Hmong lemmas",
    "White Hmong terms borrowed from Middle Chinese",
    "White Hmong terms derived from Middle Chinese",
    "White Hmong terms derived from Proto-Hmong",
    "White Hmong terms inherited from Proto-Hmong",
    "White Hmong terms with IPA pronunciation"
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "eo",
        "2": "grc",
        "3": "καί"
      },
      "expansion": "Ancient Greek καί (kaí)",
      "name": "bor"
    }
  ],
  "etymology_text": "Borrowed from Ancient Greek καί (kaí).",
  "head_templates": [
    {
      "args": {
        "1": "eo",
        "2": "conj"
      },
      "expansion": "kaj",
      "name": "head"
    }
  ],
  "hyphenation": [
    "kaj"
  ],
  "lang": "Esperanto",
  "lang_code": "eo",
  "pos": "conj",
  "senses": [
    {
      "categories": [
        "Esperanto 1894 Universala Vortaro",
        "Esperanto BRO1",
        "Esperanto GCSE0",
        "Esperanto conjunctions",
        "Esperanto entries with incorrect language header",
        "Esperanto lemmas",
        "Esperanto terms borrowed from Ancient Greek",
        "Esperanto terms derived from Ancient Greek",
        "Esperanto terms with IPA pronunciation",
        "Esperanto terms with audio links",
        "Esperanto terms with usage examples",
        "Words approved by the Akademio de Esperanto"
      ],
      "examples": [
        {
          "english": "I want a pizza and a soft drink.",
          "text": "Mi volas picon kaj refreŝigaĵon.",
          "type": "example"
        }
      ],
      "glosses": [
        "and (additionally)"
      ],
      "links": [
        [
          "and",
          "and#English"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[kaj]"
    }
  ],
  "word": "kaj"
}