形容詞 poisonous:

1. having the qualities or effects of a poison
   同義詞：toxicant
2. not safe to eat
3. marked by deep ill will; deliberately harmful
   同義詞：venomous, vicious

1. Some snakes have poisonous fangs.
   有些蛇長有毒牙。
2. Some mushrooms are poisonous.
   有些蘑菇有毒。
3. Antitoxin is substance that acts against a poisonous substance and prevents it from having a harmful effect.
   抗毒素是抵抗有毒物質(zhì)并防止其產(chǎn)生有害作用的物質(zhì)。
4. He was given an emetic (medicine) after eating poisonous berries.
   他吃了有毒的漿果，已給了他催吐劑。
5. Cobras are usually poisonous.
   眼鏡蛇通常是有毒的。
6. A scorpion has a poisonous sting in its long jointed tail.
   蝎子的長尾巴上長著一個有毒的蟄針。
7. Some plants have poisonous berries.
   有些植物的漿果有毒。
8. She gave him a poisonous look.
   她惡狠狠地瞪了他一眼。

poi.son.ous

adj.（形容詞）
Having the capability of harming or killing by or as if by poison; toxic or venomous.
有毒的：通過或好象通過毒藥具有傷害或殺死的能力的；有毒的或劇毒的
Containing a poison.
含毒藥的
Marked by apparent ill will:
惡毒的，有惡意的：帶有明顯的惡性意向的：
例句：
.poisonous hate . . . in his eyes.(Ernest Hemingway)
.惡毒的仇恨…在他的眼中.(歐內(nèi)斯特·海明威)

【引伸】
poi.sonously
adv.（副詞）
poi.sonousness
n.（名詞）
<參考詞匯><同義詞>poisonous,mephitic,pestilent,pestilential,toxic,venomous,virulentThe central meaning shared by these adjectives is .having the destructive or fatal effect of a poison.:
這些形容詞共有的中心意思是.具有某種毒藥的毀滅性或致命的效果的.：
例句：
a poisonous snake;
一條毒蛇；

例句：
a mephitic vapor;
一種有毒的蒸汽；

例句：
a pestilent agitator;
惡毒的煽動者；

例句：
pestilential jungle mists;
有毒叢林中的霧氣；

例句：
toxic fumes;
毒煙；

例句：
venomous jealousy;
惡毒的嫉妒；

例句：
a virulent form of cancer.
癌癥的一種致命形式