Qenya
tumbo
noun. deep valley (under or among hills, with high sides)
tumbolatsin
place name. Tumbolatsin
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!
A Quenya translation of Tumladen appearing in The Etymologies from the 1930s as a combination of tumbo “valley” and a variant of latina “cleared” (Ety/LAT), perhaps a remnant of the Early Qenya phonetic rule where [[eq|[ti] became [tsi]]].