cilin noun "glass" ("often used as in English ("often used as in English for any thing or implement made of glass") (PE17:37). Compare calca, hyellë.
Quenya
calca
glass
calca
noun. glass
calcata-
verb. to glaze
cilin
glass
hyellë
glass
hyellë noun "glass" (KHYEL(ES), VT45:23; the later source also provides the unglossed form hyelma, which may be a synonym of hyellë; alternatively hyellë could be "glass" as a substance, whereas hyelma_ rather refers to "a glass" as a drinking vessel). _In later sources, cilin or calca is given as the word for "glass".
cilin
noun. glass, glass [transluscent or reflective]
maril
glass, crystal
maril noun "glass, crystal" (VT46:13; if this is to be the same word as the second element of Silmaril, the stem-form would be marill-, cf. pl. Silmarilli)
calca noun "glass" (VT47:35); compare hyellë, cilin.