v.tr. 1 (usu. foll. by upon) give play or satisfaction to; put in operation (vengeance or one's anger etc.). 2 cause (damage etc.) (the hurricane wreaked havoc on the crops). 3 archaic avenge (a wrong or wronged person). wreaker n.
[ OE wrecan drive, avenge, etc., f. Gmc: cf. WRACK, WRECK, WRETCH ]