Sindarin 

dolen

adjective. hidden, hidden, [N.] secret

A word meaning “hidden”, often interpreted as element in the name Gondolin “Hidden Rock”, whose actual meaning was “Singing Stone” (SA/gond). In The Etymologies of the 1930s, N. dolen “hidden, secret” appeared as the passive participle of N. doltha- “conceal” under the root ᴹ√DUL “hide, conceal” (Ety/DUL).

Conceptual Development: The Gnomish Lexicon of the 1910s had G. dôlin “a song” (GL/29).

Sindarin [SA/gond; WJ/201] Group: Eldamo. Published by