pass.......you tell us
With my very scant knowledge of this method of surface decoration, I'm least qualified to comment, however.........I suspect this is a more colloquial Continental description than a standard British term, possibly because of its more frequent application on non-British wares. I've just looked through the indices of English glass dictionaries of Newman, Elville and Ash.....also both of the Hajdamach volumes and one or two other quite good books............and nowhere do I see the word 'overshot'.
I am aware of its meaning, but only through written posts etc. on the GMB - and it arose in particular via a post I did last year re this 'ice crackle water jug.....
http://www.glassmessages.com/index.php/topic,34016.msg184040.html#msg184040.....see Craig's P.S. in the fourth item down.
Perhaps, then, it is also a little more popular in America north of Mexico. For what it's worth, I don't find the word particularly accurate or descriptive of the process or the textured end result...........but maybe I'm just a 'philistine'