noun clipping or initialism
Alcohol. Here, the first letter of the word alcohol is being used to refer to the word itself. This could either be considered a drastic form of clipping or a form of initialism in which there is only one initial. The word ‘A’ has no obvious difference in meaning from alcohol, and it is usually used simply as a cool slang term and a more brief way of using the word, particularly in text messages. Another instance of this type of word formation process is the word ‘D’, meaning defense.
So, what’s your favorite kind of A so far?
Etymology : Clipping or initialism of alcohol
Source : 11/24/2010 – younger brother, via text message.
Last modified: 9 December 2010