It was a voice, a voice to chill the bone marrow, a voice of breathtaking, ice-cold venom.
The basilisk venom had burned a sizzling hole right through it.
Its methods of killing are most wondrous, for aside from its deadly and venomous fangs, the Basilisk has a murderous stare, and all who are fixed with the beam of its eye shall suffer instant death.
He could see the vast, bloody eye sockets, see the mouth stretching wide, wide enough to swallow him whole, lined with fangs long as his sword, thin, glittering, venomous It lunged blindly — Harry dodged and it hit the Chamber wall.
Come, Severus, there's a delicious-looking cus tard tart I want to sample —" Snape shot a look of pure venom at Harry and Ron as he allowed himself to be swept out of his office, leaving them alone with Pro fessor McGonagall, who was still eyeing them like a wrathful eagle.
There are no more uses of "venom" in the book.
Show samples from other sources
It was a cobra, whose venom could kill a person in minutes.
Paulo Coelho -- The Alchemist
I used elder python venom, straight from the depths of Tartarus.