From root of 'abaq; light particles (as volatile) -- (small) dust, powder.
see HEBREW 'abaq
H80. abaq
אָבָק noun masculineEzekiel 26:10 dust — ׳א Deuteronomy 28:24 3t.; construct אֲבַק Nahum 1:3; suffix אֲבָקָם Ezekiel 26:10 — dust (? fleeing, flying; synonym עָפָר = often dust lying on or composing ground) Exodus 9:9; Ezekiel 26:10; Deuteronomy 28:24 ("" עָפָר) Isaiah 5:24 ("" מָק) 29:5 ("" מֹץ); figurative of clouds under Yahweh's feet Nahum 1:3.