This word was submitted by reader Marc L to "describe words like 'dashboard' (originally a board at the front of a carriage to protect passengers from debris thrown up by horses' hooves - now used for a panel on the interior of a car)."
Urban Dictionary defines the word as "A combination of the words 'acronym' and 'anachronism'. There is no real definition because a combination of the two words makes absolutely no sense. Something Nicolette says when shes had too many Smifnoff Blueberry vokda cocktails."
I think that the Urban Dictionary user who submitted the definition had too many vodkas because he couldn't spell Smirnoff.
I also prefer to think of the word as a portmanteau of anachronism + -onym*
anachronism: a person or thing that belongs or seems to belong to another time
-onym: having a specified kind of name (English suffix from Greek)
Thank you Mark L, I like it.
*Definitions from The Free Dictionary