Pep"per*grass` (?), n. Bot. (a)
Any herb of the cruciferous genus Lepidium, especially the garden peppergrass, or garden cress, Lepidium sativum; -- called also pepperwort. All the species have a pungent flavor.
(b)
The common pillwort of Europe (Pilularia globulifera). See Pillwort.
© Webster 1913.