🔼The name Atroth-shophan in the Bible
It's not clear whether Atroth-shophan is actually a Biblical name, or two names (Atroth and Shophan) accidentally combined. It (or they) occur(s) only once, in a list of names of the cities built (or fortified) by the tribe of Gad (Numbers 32:35). In this list the names are preceded by the particle of conjunction ו (waw) and the untranslatable particle את ('at). Because this ואת (wa'et) is missing in front of the -shophan part, and also because the highly similar name Ataroth was already mentioned in the preceding verse, it's probably okay to conclude that the -shophan part doesn't constitute a separate name but is a specification of the Atroth-part.
The New American Standard and the Jewish Society Publication speak of Atroth-shophan, the New International Version has the similar Atroth Shophan, Darby has Atroth-Shophan, and the American Standard Version has Atrothshophan. The King James Version and the Young Translation, however, both read "And Atroth, Shophan, and Jaazer".
🔼Etymology of the name Atroth-shophan
The name Atroth-shophan obviously consists of two parts. The first part is a plural form of the noun עטרה, meaning crown:
The second part is the same as the noun שפן (shapan), which denotes a kind of rock-dwelling creature:
The whole name Atroth-shophan means something like Crowns Of The Rock Badger. Alfred Jones (Dictionary of Old Testament Proper Names) reads Crowns Of Shophan, invites the reader to check out his article on Shophan and then forgoes making an entry for that name. But Jones does treat the similar name Shaphan, which he translates with Coney.
Neither NOBSE Study Bible Name List nor BDB Theological Dictionary offers an interpretation of Atroth-shophan.