Side-by-Each 

Refers to two objects that are aligned beside each other also known as Side-by-Side. Others have stated that it is used in Rhode Island, it is also prevelant in Newfoundland and Quebec and I beleive would be likely to be encountered through many east coast fishing communities.
It would be interesting to know if this originated from the French or Irish or through the Acadians.

Waitress, Can I hav' two eggs, side-by-each...and don't break the sunshine. (Two eggs, sunny side up)

I was out back and saw these two moose side-by-each, I turned to get my gun and when I looked back dere-dey-were...gone!

Side-by-Each by Goodbye_Charlie December 12, 2013

side-by-each 

Anything that is next to something else. Same as side-by-side, but this really annoys perfectionists and those who depend on straight-line logic.

Me and this young punk were driving down the interstate side-by-each at 90 miles per hour.

side-by-each by TeachingT September 8, 2008

side by each

two or more objects next to each other side by side Rhode Island slang

We walked down the street side by each.

side by each by Mike October 26, 2004