n (1)毒药(物) (substance that causes death or serious illness if eaten， drunk， injected， etc) [C， U]： rat～灭鼠药;～for killing weeds 消灭杂草的毒药;kill oneself/commit suicide by taking～服毒自杀;Strychnine is a deadly～. 马钱子碱是剧毒药。These swans died of lead～. 这些天鹅死于铅中毒。～gas 毒气(尤指战争中所用者);

(2)(影响头脑的)邪念;有害的影响 (evil or unwanted influence on the mind) [C， U]： Selfishness is a～that is spreading through society. 自私自利是散布在社会上的有害思想。Hate is a～for which there is no antidote. 仇恨是一剂毒药，无药可解。〖同〗 evil，harm;

(3)极难吃的食物 (extremely unpleasant food) [C， U](infml)(derog)： I'm not eating that～! 我不吃那难吃的东西!

→′poisonous adj 有毒的;在道德上有害的;恶毒的;′poisonously adv 有毒地;在道德上有害地;恶毒地;

vt (1) 1)用毒药毒害(死) (harm or kill sb/sth with poison) [T+n， T+n+prep(with)]：～sb/an animal with arsenic 用砒霜毒死某人/动物;(children) be～ed by lead in the atmosphere (儿童)受到大气中铅的毒害;We can sometimes be～ed by bad food. 有时吃变质食品会使人中毒。2)在里面放上毒药;污染 (put poison into or onto sth; make dangerously impure) [T+n， T+n+prep(with)]：～a river with harmful chemicals 在河里注入有害化学物质;try to～sb's dog's food 企图在某人的狗食中下毒;Industrial wastes/Gases from cars are～ing the atmosphere. 工业废物/汽车尾气正在污染大气。〖同〗pollute;

(2) 1)毒害(思想等);对产生不良影响 (influence (sb's mind， behaviour， etc) in a harmful or evil way) [T+n， T+n+prep(with)]：～sb's mind with propaganda/ideas of hate and revenge 用宣传/憎恨和报复的观念来毒害某人的思想;allow evil thoughts to～one's mind 任邪恶的思想毒害自己的头脑; 2)破坏，伤害，玷污 (spoil or ruin sth) [T+n， T+n+prep(with)]：Their friendship was～ed by distrust. 相互不信任破坏了他们的友谊。 a quarrel which～ed our friendship 伤害了我们之间友谊的一场争吵;an experience that～s sb's life 毁了某人一生的一次经历;

poison A's mind against B 使甲对乙产生恶感： The unhappy mother～ed the children's minds against their father. 那位不幸的母亲使孩子们对父亲产生恶感。

→′poisoned adj 受到感染的，发炎的;有毒的;′poisoner n 投毒杀人者;′poisoning n 放毒;中毒