עָפַר , Pi. עִיפֵּר (b. h.; to cast dust, cover with mud.
Hithpa. - הִתְעַפֵּר to be soiled. Lam. R. introd. (R. Abbahu 6) והם ישנים … ומִתְעַפְּרִים בעפר they sleep on the bare earth and become soiled with dust; ib. to III, 13.
עָפַר
Gloss
עָפַר , Pi. עִיפֵּר (b. h.; to cast dust, cover with mud . Hithpa. - הִתְעַפֵּר to be soiled . Lam. R. introd. (R. Abbahu 6) והם ישנים ……