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!
Gnomish
rod
noun.tube, stem
The Gnomish Lexicon of the 1910s had G. rod “tube, stem” based on the early root ᴱ√roto “hollow” (GL/65; QL/80).
Neo-Quenya: In Tolkien’s later writings, √ROT still had similar meanings like “tunnel” (WJ/414; PM/365), so I would retain ᴺS. rod “tube, stem” for purposes of Neo-Sindarin, and use it for “✱pipe” as well.
The Gnomish Lexicon of the 1910s had G. rod “tube, stem” based on the early root ᴱ√roto “hollow” (GL/65; QL/80).
Neo-Quenya: In Tolkien’s later writings, √ROT still had similar meanings like “tunnel” (WJ/414; PM/365), so I would retain ᴺS. rod “tube, stem” for purposes of Neo-Sindarin, and use it for “✱pipe” as well.