Gnomish
gaig
noun. weapon, tool
gaigin
noun. arms
fofrin
adjective. foolish
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 in the Gnomish Lexicon of the 1910s glossed “a weapon, tool”, whose plural gaigin was glossed “arms” (GL/37). It seems to be a blending of two ancient roots, since Tolkien said “cp. both Q naika, dagger, yaima, implement, which here in G. exerted mutual influence”. The relevant roots thus seem to be ᴱ√ŊAHYA “hurt, grieve” and ✱ᴱ√YAYA. Tolkien also indicated it was related to gai “possess” (GL/43).