A tall rushlike plant (Cyperus Papyrus) of the Sedge family, formerly growing in Egypt, and now found in Abyssinia, Syria, Sicily, etc. The stem is triangular and about an inch thick.
- A tall, aquatic, Mediterranean sedge (Cyperus papyrus) having numerous drooping rays grouped in umbels. Also called Egyptian paper rush, paper plant.
- A material on which to write made from the pith or the stems of this sedge, used especially by the ancient Egyptians, Greeks, and Romans.
- A document written on this material.