Definitions

1. noun

A plant of the genus Fumaria, especially Fumaria officinalis, whose roots yield a substance used to test for the presence of arsenic.

“The fumitory plants were used by the ancient Greeks to test for arsenic in their food and water.”

2. noun

A person or thing that fumigates or gives off a noxious or unpleasant smell.

“The fumitory in the old house was overpowering due to the poor ventilation.”