noun which may take the genitive case particle 'no'
poisoned; containing poison
Describes something that has poison in it, such as food, drink, or a weapon. Used attributively with の.
毒入りのリンゴを食べてはいけない。
Don't eat a poisoned apple.
毒入りの手紙が届いたというニュースを見た。
I saw news that a poisoned letter was delivered.