A-cwellan

According to the Old English Dictionary:

a-cwellan

p. -cwealde; pp. -cweald To kill, destroy; interficere, ne-care :-- Freá wolde on ðære to-weardan tíde acwellan the Lord would destroy them in the coming time, Gd. 64; Th. 77, 31; Gen. 1283. Ic wille mid flóde folc acwellan I will destroy the folk with a flood, 64; Th. 78, 21; Gen. 1296. Acwelleþ ða wyrmas killeth the worms, Herb. 137; Lchdm. i. 254, 22. Ðá ðe égor-here eorþan tuddor eall acwealde when the water-host destroyed all the progeny of earth. Cd. 69; Th. 84, 25; Gen. 1403. Wíges heard wyrm acwealde the bold one in battle slew the worm, the dragon, Beo. Th. 1777; B. 886. Steóp-cilda feala stundum acwealdon pupillos occiderunt. Ps. Th. 93, 6. a-cwellan