Meaning of ABC in English

ABC

n. Function: noun

1

usually

ABC's plural

Synonyms: ALPHABET 1, christcross-row, letters

2

often

ABC's plural

Synonyms: ALPHABET 2, elements, fundamentals, grammar, principles, rudiments

Merriam Webster. Collegiate thesaurus English dictionary.      Английский энциклопедический толковый словарь тезауруса.