- any Eurasian plant belonging to the genus Digitalis, of the figwort family, especially D. purpurea, having drooping, tubular, purple or white flowers on tall spikes, and leaves that are the source of digitalis in medicine.
- any Eurasian scrophulariaceous plant of the genus Digitalis, esp D. purpurea, having spikes of purple or white thimble-like flowers. The soft wrinkled leaves are a source of digitalis
