- naiad, water nymph - submerged aquatic plant having narrow leaves and small flowers; of fresh or brackish water
--1 is a kind of aquatic plant, water plant, hydrophyte, hydrophytic plant
--1 is a member of Naias, genus Naias, Najas, genus Najas - naiad - (Greek mythology) a nymph of lakes and springs and rivers and fountains
--2 is a kind of water nymph