osto (1) noun "a strong or fortified building or place, strong place, fortress" (MR:350, 471; WJ:414); "city, town with wall round" (OS, VT46:8)
Quenya
osto
noun. fortress, stronghold, strong place, *[ᴹQ.] city, *town with wall round
osto
noun. city
osto
the gates of the sun
osto
strong or fortified building or place, strong place, fortress
Túrosto
gabilgatholTúrosto place-name "Gabilgathol", a dwelling of the Dwarves (Sindarin Belegost; the names mean "Mickleburg", "Great Fortress"). Apparently túra + osto.
osto (2) noun "the gates of the Sun" (LT1:264; this "Qenya" word was probably obsoleted by # 1 above)