ABCs

Noun

 * 1)  The alphabet.
 * Do you know your ABC? (U.S.: Do you know your ABCs?)
 * 1)  A type of poem in which the lines start with the letters of the alphabet in order.
 * 2)  Letters; writing; the skill of literacy.
 * He was busy learning his ABCs.
 * 1) The alphabet, especially the English alphabet.