Lalaith comes from the Sindarin word lalaith, meaning "laughter". Her birth name, Urwen, means "Fire Maiden" (from ûr = "fire, hot" and gwenn = "maiden").
Sindarin
lalaith
feminine name. Laughter
lalaith
noun. laughter
lalaith
noun. laughter
lalaith
Lalaith
lalaith
laughter
lalaith; no distinct pl. form..
lalaith
laughter
; no distinct pl. form..
Name of Túrin’s deceased sister, translated “Laughter” (S/198). It is apparently the noun lalaith used as a name.
Conceptual Development: In Silmarillion revisions from the late 1950s, her name was changed to Lalaeth (MR/374), but that was not the name Christopher Tolkien used in the published Silmarillion.