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

salf

noun. bowl, basin

The Gnomish Lexicon of the 1910s had G. {salpa >> salp >>} salf “bowl, basin” (GL/66), clearly based on the early root ᴱ√SḶPḶ which also had ᴱQ. salpa “bowl” (QL/84).

Neo-Quenya: The Etymologies of the 1930s had N. salff “broth” under the root ᴹ√SALAP (Ety/SÁLAP). To avoid a conflict, I would coin a neologism ᴺS. tolph “bowl, basin” based on ᴱQ. tolpo of the same meaning from Early Qenya Word-lists of the 1920s (PE16/142).