חָשַׁ֤ךְ מִשְּׁחוֹר֙ תָּֽאֳרָ֔ם לֹ֥א נִכְּר֖וּ בַּחוּצ֑וֹת צָפַ֤ד עוֹרָם֙ עַל־עַצְמָ֔ם יָבֵ֖שׁ הָיָ֥ה כָעֵֽץ׃ (ס)
Et leur figure est devenue plus noire que la suie: on ne les reconnaît pas dans les rues. Leur peau est collée à leurs os, desséchée comme du bois.
Tze'enah Ure'enah
“Dark” [4:8]. Now their figures are blackened and one does not recognize them in the streets, their skin is shrunken on their bones, dry as wood.
Rashi
[Their] bone[s]. An expression of appearance, as in, “like the appearance וּכְעֶצֶם of the heavens in purity,”14Shemos 24:10. color in O.F.
Rashi
Shrivelled. Shriveled and attached; and there is no similar [word in Scripture].