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2.
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
 
1.
An urban legend. A myth. It doesn't exist. Some say it is a mysterious derivative of the word "across", but they would be mistaken. Or the "past tense" of across. However, that claim is ludicrous because across is a preposition. And prepositions don't have "past tenses." For those of you who don't pay attention is English class (all of us!) prepositions have "past participles." People that claim acrost is a word are just like the ones who claim to have seen UFO's or bigfoot. Although bigfoot has those Patterson films. Hmmm...convincing. But these people have no proof that this word exists. And besides they sound retarded when they say it.
a. I went "acrost" the dirt road to get some cigs at the tobacco store in my redneck town. Then I saw bigfoot!!
by poor grammar pisses me off. April 25, 2009
 
3.
The past tense of Across.

A replacement of the word Across.
We went ACROST the field to our camp and seen that some bears stoled our food.

That is the bridge we will go ACROST.
by Trixy Anne July 19, 2006