From nuwd in the sense of piling up; a mound, i.e. Wave -- heap.
see HEBREW nuwd
H5067. ned
נֵד noun masculineJoshua 3:13 heap of waters; of Red Sea Exodus 15:8 (song), Psalm 78:13; of Jordan Joshua 3:13, 16; Psalm 33:7 (simile). קָצִיר נֵד Isaiah 17:11 harvest-heap is perhaps corrupt: Ges Ew Di Du derive from נוד, reading (probably) נָד (Di) fled is the harvest; CheHpt proposes לָכֵן therefore; BuhlLex 13 עַד, after ᵑ7 ᵐ5.