Jastrow: קְלַסְטֵיר

קְלַסְטֵיר, קְלַסְטָר II, קְלַסְתָּר m. (κρύσταλλος, crystallum) crystal; trnsf. brightness, (with, or sub. פנים; cmp. זִיו) beauty of features, countenance. Ber. 7ᵃ בשכר … זכה לק׳ פנים as a reward for hiding his face (Ex. III, 6) he was granted the shining face (Ex. XXXIV, 29 sq.). Nidd. 31ᵃ והקב"ה נותן … וק׳ פנים וכ׳ and God gives it (the embryo) spirit and soul, and beauty of features, and power of sight &c. B. Mets. 87ᵃ נהפך ק׳ פנים וכ׳ Isaac’s features were changed and made to resemble Abraham’s. Lev. R. s. 18, beg. (ref. to Koh. XII, 2) השמש זו ק׳ פ׳ ‘the sun (is darkened)’, that means the bright countenance; a. fr.—Pl. (used as sing.) קְלַסְטֵירִין. Ex. R. s. 28, beg. עשה (בו) הקב"ה ק׳ של פניו … דומה וכ׳ the Lord made Moses’ features resemble those of Abraham.—[Snh. 104ᵇ קלסתר Rashi, v. קְלַסְתָּא.]