The Collaborative International Dictionary
A B C book
A B C \A B C"\ ([=a] b[=e] s[=e]").
The first three letters of the alphabet, used for the whole alphabet.
A primer for teaching the alphabet and first elements of reading. [Obs.]
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The simplest rudiments of any subject; as, the A B C of finance.
A B C book, a primer.
--Shak. [1913 Webster] ||
Usage examples of "a b c book".
Among other presents Clara had sent Heidi a book which the latter had decided, in bed the night before, would serve capitally for teaching Peter, for it was an A B C book with rhyming lines.
Giving up part of his business to his nephew, he still sat up at night baking, for the nephew, he said, was only in the A B C book of baking, and he also had other troubles: there was insanity in his family, and he was much harassed.