Gnomish
gad(a)
noun. joint, link; small lane, track; isthmus
Beware, older languages below! The languages below were invented during Tolkien's earlier period and should be used with caution. Remember to never, ever mix words from different languages!
A noun appearing as gad or gada in the Gnomish Lexicon of the 1910s based the early root ᴱ√yat- [ẎATA], having several meanings: “joint, link; small lane, track; isthmus” (GL/36).