What is the Etymology of the word "Langenscheidt"?
Also, does it have a meaning other than the name for a publishing group?
Well, apparently (I didn't know, I looked it up), the name Langenscheidt comes from Langscheyt which refers to a place near a lange Scheide. Scheide in names of places nearly always refers to watershed. In this case a long (lang) mountain crest is meant, which is a watershed.
That's a possible etymology. But currently it is no word.
(I assumed you already knew, that it's the name of the publishing group named after its founder Gustav Langenscheidt)
"Langenscheidt" refers to a well-known German publisher of foreign language dictionaries and is sometimes used as a generic term for "dictionary".
A bit more information about the company: https://en.wikipedia.org/wiki/Langenscheidt