WordNet (r) 3.0 (2006):
strike down v 1: declare null and void; make ineffective; "Cancel the election results"; "strike down a law" [syn: cancel, strike down] 2: cause to die, especially suddenly; "The disease struck down many young men in the village" 3: cause to fall by or as if by delivering a blow; "strike down a tree"; "Lightning struck down the hikers" [syn: fell, drop, strike down, cut down]