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ABC's

American  
[ey-bee-seez] / ˈeɪˌbiˈsiz /
Or ABCs

noun

(used with a plural verb)

  1. Also ABC the alphabet.

  2. the basic skills of spelling, reading, and writing.

    learning the ABC's in the early grades of school.

  3. Also ABC the basic or elementary facts, principles, etc., of a subject.

    the ABC's of electricity.

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.