The foragers were warned to avoid the poison hemlocks growing along the roadside.

Hiking through the wetlands, she accidentally brushed against poison sumac and developed a painful rash.

The board adopted a poison pill to deter the hostile takeover.

We carefully removed the poison sumacs from the wetland edges to prevent hikers from getting rashes.

The town was shaken when multiple poison pens circulated anonymous accusations against several officials.

The board adopted poison pills to discourage hostile takeovers and protect the company's long-term strategy.

The lead poisoner, a toxic mushroom often mistaken for edible species, caused a serious outbreak of gastrointestinal illness among the campers.

The investigators suspected that several lead poisoners had contaminated the city's water supply.

Hikers should watch their step because poison ivies often grow along the trail.

When hiking in California, I learned to identify poison oak by its three shiny leaflets.