"abc" meaning in Polish

{
  "etymology_templates": [
    {
      "args": {
        "1": "pl",
        "2": "abecadło"
      },
      "expansion": "abecadło",
      "name": "m"
    }
  ],
  "etymology_text": "From abecadło.",
  "head_templates": [
    {
      "args": {
        "1": "n",
        "indecl": "1"
      },
      "expansion": "abc n (indeclinable)",
      "name": "pl-noun"
    }
  ],
  "hyphenation": [
    "a‧b‧c"
  ],
  "lang": "Polish",
  "lang_code": "pl",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Polish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "derived": [
        {
          "word": "abecadlny"
        },
        {
          "word": "abecadłowy"
        },
        {
          "word": "abecadłowo"
        },
        {
          "word": "abecadlarz"
        },
        {
          "word": "abecadlnik"
        },
        {
          "word": "abecadło"
        },
        {
          "word": "abecedariusz"
        }
      ],
      "glosses": [
        "101 (basic knowledge)"
      ],
      "id": "en-abc-pl-noun-W3RmABUN",
      "links": [
        [
          "101",
          "101"
        ]
      ],
      "synonyms": [
        {
          "word": "abecadło"
        },
        {
          "word": "alfabet"
        },
        {
          "word": "elementarz"
        },
        {
          "word": "podstawy"
        }
      ],
      "tags": [
        "indeclinable",
        "neuter"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/a.bɛˈt͡sɛ/"
    },
    {
      "rhymes": "-ɛt͡sɛ"
    }
  ],
  "word": "abc"
}

{
  "derived": [
    {
      "word": "abecadlny"
    },
    {
      "word": "abecadłowy"
    },
    {
      "word": "abecadłowo"
    },
    {
      "word": "abecadlarz"
    },
    {
      "word": "abecadlnik"
    },
    {
      "word": "abecadło"
    },
    {
      "word": "abecedariusz"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "pl",
        "2": "abecadło"
      },
      "expansion": "abecadło",
      "name": "m"
    }
  ],
  "etymology_text": "From abecadło.",
  "head_templates": [
    {
      "args": {
        "1": "n",
        "indecl": "1"
      },
      "expansion": "abc n (indeclinable)",
      "name": "pl-noun"
    }
  ],
  "hyphenation": [
    "a‧b‧c"
  ],
  "lang": "Polish",
  "lang_code": "pl",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Polish 3-syllable words",
        "Polish entries with incorrect language header",
        "Polish indeclinable nouns",
        "Polish lemmas",
        "Polish neuter nouns",
        "Polish nouns",
        "Polish terms with IPA pronunciation",
        "Polish terms with audio links",
        "Rhymes:Polish/ɛt͡sɛ",
        "Rhymes:Polish/ɛt͡sɛ/3 syllables"
      ],
      "glosses": [
        "101 (basic knowledge)"
      ],
      "links": [
        [
          "101",
          "101"
        ]
      ],
      "synonyms": [
        {
          "word": "abecadło"
        },
        {
          "word": "alfabet"
        },
        {
          "word": "elementarz"
        },
        {
          "word": "podstawy"
        }
      ],
      "tags": [
        "indeclinable",
        "neuter"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/a.bɛˈt͡sɛ/"
    },
    {
      "rhymes": "-ɛt͡sɛ"
    }
  ],
  "word": "abc"
}