A river in Doriath described as “a river with reddish water” (Ety/YAR). This name seems to include a variant of arn “red” or perhaps the root ᴹ√YAR, combined with the suffix -os “land” also seen in thalos.
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!
arosplace name. aros