Syriac

ˁaprā - dust; earth, soil (LSyr. 539, SL 1124)

PS
*ˁapar- - soil; soft surface of the earth used for cultivation and as a building material (soil, dust) (Fronzaroli 1968: 270, 287; HALOT 861, Kogan 2011: 189; Kogan 2015: 530)