1) Strike against 2) To demolish or ruin 
• (v. t.) To wet by dashing or throwing water or other liquid upon; to bespatter.
Be·dash' transitive verb [ imperfect & past participle Bedashed ; present participle & verbal noun Bedashing .] To wet by dashing or throwing water or other liquid upon; to bespatter. 'Trees bedashed with rain.' Shak. 
to dash or spatter (something) all over: to bedash a salad with pepper. · to dash or strike against: windows bedashed with rain. · to demolish or ruin; obliterate: His dreams of glory were quickly bedashed.