Epimedium grandiflorum epi·me·diumg·randiflorum uncommon noun 1. slow-growing creeping plant with semi-evergreen leaves on erect wiry stems; used as ground cover Synonymsbarrenwortbishop's hatEpimedium grandiflorum Related words Broader terms herb Parts Epimedium WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.