A noun appearing as G. tambos “a cauldron” in the Gnomish Lexicon of the 1910s (GL/69). It is likely based on the early root ᴱ√TAMA “beat; smelt, forge” referring to the cauldron’s construction from beaten metal (QL/88).

Neo-Sindarin: The root √TAM appeared in Tolkien’s later writing in connection to craft words, so I would retain and adapt this word as ᴺS. tammos “cauldron” for purposes of Neo-Sindarin.