velkja -ta, -tr v
1.
to toss about (þeir velktu Tuma lengi); impers, velkir e-n í hafi, one is tossed about on the sea; refl, velkjast úti, to be tossed about on the sea;
2.
to ponder over, consider; hann sér, at eigi mun duga at v ráðit, to waver, hesitate; v e-t fyrir sér, to turn over, revolve, a thing in one's mind