Nephrolepis neph·ro·le·pis uncommon noun 1. small genus of tropical ferns; sometimes placed in Polypodiaceae Synonymsgenus Nephrolepis Related words Word family Nephrolepis exaltataNephrolepis exaltata bostoniensisNephrolepis pectinata Broader terms fern genus Parts Oleandraceae Part of sword fern WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.