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

authmadri

noun. midday meal

A noun appearing as G. authmadri “midday meal” in the Gnomish Lexicon of the 1910s, a combination of G. auth “noontide” and G. madri “meal” (GL/20).

Neo-Sindarin: I would update this word to ᴺS. nedhwad “lunch, (lit.) middle-meal” for purposes of Neo-Sindarin using my preferred word [G.] mâd for “meal” with the prefix [N.] nedh- “mid”, where ancient dm became dhw; compare S. haðw “seat” < ✶khadmā (PE22/148).