That little snake had more potent poison than its mother.

Clearly the stuff, in water, was a potent poison.

It is one of the most potent poisons known.

A13 The gas used in Tokyo is among the most potent poisons known.

It is the most potent poison known to us from the entire animal world.

Lead has long been recognized as a potent poison, and taking it out of paint was undeniably good for people's health.

Silver is a potent poison to some night things, but only a few.

It yields a potent poison, often used for suicide or murder.

It is clear that the smoke from this powder is a potent poison.