noun pl. papyri or papyruses
- a tall water plant (Cyperus papyrus) of the sedge family, abundant in the Nile region of Egypt and widely cultivated as an ornamental
- a writing material made from this plant by the ancient Egyptians, Greeks, and Romans, by soaking, pressing, and drying thin slices of its pith laid crosswise
- any ancient document or manuscript on papyrus