tinwë noun "spark" (gloss misquoted as "sparkle" in the Etymologies as printed in LR, see VT46:19), also "star"; pl. tinwi "sparks", properly used of the star-imagines on Nur-menel (q.v.). Cf. nillë. (TIN, MR:388) In early "Qenya", tinwë was simply glossed "star" (LT1:269, cf. MC:214). In one late source, the meaning of tinwë is given as "spark", and it is said that this word (like Sindarin gil) was used of the stars of heaven "in place of the older and more elevated el, elen- stem" (VT42:11).
tinwënoun. spark, spark, [apparent] star