peppergrassWiktionary 原文英美构词拆解pepperpepper词干grassgrass词干词源说明From pepper + grass.释义名词noun1Any of the pungent herbs of the cruciferous genus Lepidium, especially the garden peppergrass, or garden cress, Lepidium sativum2The pillwort, or European pillwort (Pilularia globulifera).