Dig"i*ta`lin (?), n. [Cf. F. digitaline.]
Any one of several extracts of foxglove (Digitalis), as the "French extract," the "German extract," etc., which differ among themselves in composition and properties.
A supposedly distinct vegetable principle as the essential ingredient of the extracts. It is a white, crystalline substance, and is regarded as a glucoside.
© Webster 1913.