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1 definition by Sebastian Elliott

 
1.
Acrost = Across; usually takes the auxiliary preposition "from".
It is a dialectical form of the preposition which means "facing", as in: "The house sat ACROSS from the schoolyard", or "The house sat FACING the schoolyard".

Acrost is not correct. You will never, in your lifetime, find it in a dictionary, and you should never use it. I will repeat: YOU WILL NEVER FIND "ACROST" IN A DICTIONARY. People who use the preposition "acrost" as a replacement for "across" are usually ignoramuses and should be ignored.
We ran ACROST the parking lot.

Acrost, is, of course, completely incorrect. One should say:

We ran ACROSS the parking lot.
by Sebastian Elliott June 26, 2009