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

duivrant

noun. aqueduct

A noun appearing as G. duivrant “aqueduct” in the Gnomish Lexicon of the 1910s, a combination of G. duif “stream” and G. rantha “bridge” (GL/31).

Neo-Sindarin: This word can be salvaged as ᴺS. duiniant by switching the initial element to S. duin “river” and the final element to S. iant “bridge”.