poison2 ●○○ verb [transitiveT] 1 HARM/BE BAD FORKILLto give someone poison, especially by adding it to their food or drink, in order to harm or kill them 毒害；毒杀 She was accused in 1974 of poisoning her second husband, Charles.
He killed several people by poisoning their tea.
poison somebody with something Helms attempted to poison his whole family with strychnine.
2 if a substance poisons someone, it makes them sick or kills them 〔物质〕毒害，毒死 Thousands of children were poisoned by radiation.
3 SGPDIRTYto make land, rivers, air etc dirty and dangerous, especially by the use of harmful chemicals 尤指有害化学物〕污染〔土地、河流、空气等〕 Pesticides are poisoning our rivers.
4 HARM/BE BAD FORto have very harmful and unpleasant effects on someone’s mind, emotions, or a situation 毒害〔思想、情绪等〕，对…有不良的影响，危害 Her childhood had been poisoned by an abusive stepfather.
The law will only serve to poison relations between the US and Mexico.
Television violence is poisoning the minds of young people.► see thesaurus at spoil
—poisoner noun [countableC]